Anna's chromodoris Chromodoris annae
Sponge on rubble and rock · 3–30 m
1 star of 5, found on most dives in Lembeh Strait
Banggai cardinalfish Pterapogon kauderni
Sea urchins and branching coral · 1–16 m
1 star of 5, found on most dives in Lembeh Strait
Barrel sponge Xestospongia testudinaria
Reef slopes and walls · 10–50 m
1 star of 5, found on most dives in Bali
Brittle star Ophiothrix purpurea
Sponge, sea fans and rubble · 1–40 m
1 star of 5, found on most dives in Lembeh Strait
Bubble-tip anemone Entacmaea quadricolor
Coral heads, rubble and reef slopes · 2–25 m
1 star of 5, found on most dives in Lembeh Strait Caution Checkered snapper Lutjanus decussatus
Rubble, coral heads and reef slopes · 3–35 m
1 star of 5, found on most dives in Anilao
Christmas tree worm Spirobranchus giganteus
Living hard coral · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Clark's anemonefish Amphiprion clarkii
Sea anemones on sand, rubble and reef · 1–40 m
1 star of 5, found on most dives in Lembeh Strait
Cleaner wrasse Labroides dimidiatus
Reef edges, rubble and wrecks · 1–40 m
1 star of 5, found on most dives in Lembeh Strait
Coconut octopus Amphioctopus marginatus
Open silt flats · 5–30 m
1 star of 5, found on most dives in Lembeh Strait
Cross's damselfish Neoglyphidodon crossi
Coral rubble and reef edges · 1–12 m
1 star of 5, found on most dives in Lembeh Strait
Eightband butterflyfish Chaetodon octofasciatus
Branching coral on reef slopes and rubble · 2–20 m
1 star of 5, found on most dives in Lembeh Strait
Foxface rabbitfish Siganus vulpinus
Reef slopes and flats · 2–35 m
1 star of 5, found on most dives in Bali Caution Gorgonian sea fan Gorgonacea
Current-exposed slopes and drop-offs · 10–45 m
1 star of 5, found on most dives in Lembeh Strait
Haddon's carpet anemone Stichodactyla haddoni
Sand and seagrass · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Leopard flounder Bothus pantherinus
Open sand and silt · 2–30 m
1 star of 5, found on most dives in Lembeh Strait
Longnose butterflyfish Forcipiger flavissimus
Reef slopes and walls · 3–50 m
1 star of 5, found on most dives in Bali
Magnificent sea anemone Heteractis magnifica
Reef slopes and coral heads · 3–30 m
1 star of 5, found on most dives in Bali Caution Mushroom coral Fungiidae
Sand and rubble at the foot of slopes · 2–30 m
1 star of 5, found on most dives in Lembeh Strait
Mysid shrimp Mysida
Rubble and coral heads · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Ocellaris clownfish Amphiprion ocellaris
Host anemones · 1–15 m
1 star of 5, found on most dives in Lembeh Strait
Pink anemonefish Amphiprion perideraion
Sea anemones on reef and rubble · 3–30 m
1 star of 5, found on most dives in Lembeh Strait
Purple anthias Pseudanthias tuka
Reef slopes and drop-offs · 5–40 m
1 star of 5, found on most dives in Papua New Guinea
Red lionfish Pterois volitans
Rubble, coral heads, wrecks and jetty pilings · 1–50 m
1 star of 5, found on most dives in Lembeh Strait Needs treatment Red-cheeked anthias Pseudanthias huchtii
Reef slopes and walls · 5–40 m
1 star of 5, found on most dives in Bali
Saddleback anemonefish Amphiprion polymnus
Carpet anemones on black sand and silt · 3–30 m
1 star of 5, found on most dives in Lembeh Strait
Snapping shrimp Alpheus spp.
Sand and silt burrows · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Striped catfish Plotosus lineatus
Silt and sand near structure · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Needs treatment Tomato anemonefish Amphiprion frenatus
Bubble-tip anemones on reef and rubble · 2–25 m
1 star of 5, found on most dives in Lembeh Strait
Twinstripe fusilier Pterocaesio marri
Open water over slopes and drop-offs · 3–45 m
1 star of 5, found on most dives in Bali
Variegated lizardfish Synodus variegatus
Sand and rubble · 1–40 m
1 star of 5, found on most dives in Lembeh Strait Caution White-eyed moray Gymnothorax thyrsoideus
Rubble, rock and jetty debris · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Needs treatment Yellow shrimpgoby Cryptocentrus cinctus
Silt and fine sand · 1–25 m
1 star of 5, found on most dives in Lembeh Strait
Algae octopus Abdopus aculeatus
Shallow rubble, seagrass and reef flat · 0–15 m
2 stars of 5, usually seen in a week in Lembeh Strait
Barred soapfish Diploprion bifasciatus
Reef edges and rubble; larvae in blackwater · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Bigfin reef squid Sepioteuthis lessoniana
Open water over reef and jetties · 0–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Black-ray shrimpgoby Stonogobiops nematodes
Sand and rubble slopes · 5–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Bobtail squid Euprymna berryi
Fine sand, buried by day · 5–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Broadclub cuttlefish Ascarosepion latimanus
Reef edges and rubble · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Bullock's hypselodoris Hypselodoris bullockii
Sponge on rubble and rock · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Cockatoo waspfish Ablabys taenianotus
Open sand · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Comb jelly Ctenophora
Open water over deep drop-offs · 0–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Common ghost goby Pleurosicya mossambica
Sponges, soft corals and clams · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Copperband butterflyfish Chelmon rostratus
Silty reef, rubble and jetty pilings · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Coral rabbitfish Siganus corallinus
Coral-rich reef and slopes · 3–30 m
2 stars of 5, usually seen in a week in Papua New Guinea Caution Crescent-tail bigeye Priacanthus hamrur
Overhangs, wrecks and reef slopes · 5–50 m
2 stars of 5, usually seen in a week in Bali
Crinoid shrimp Laomenes amboinensis
Feather stars on rubble and slope · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Crinoid squat lobster Allogalathea elegans
Feather stars · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Crocodilefish Cymbacephalus beauforti
Rubble, sand and reef flat · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Devil scorpionfish Scorpaenopsis diabolus
Rubble and rock on sand · 1–40 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Emperor shrimp Zenopontonia rex
On sea cucumbers and nudibranchs · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Filamented flasher wrasse Paracheilinus filamentosus
Rubble slopes and reef edges · 5–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Fimbriated moray Gymnothorax fimbriatus
Sand, rubble and reef margins · 2–45 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Fire goby Nemateleotris magnifica
Rubble at slope edges · 6–60 m
2 stars of 5, usually seen in a week in Lembeh Strait
Fire urchin Asthenosoma varium
Sand and rubble · 8–40 m
2 stars of 5, usually seen in a week in Anilao Needs treatment Flamboyant cuttlefish Ascarosepion pfefferi
Fine sand · 3–18 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Giant frogfish Antennarius commerson
Sponge and wreck structure · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Hair jellyfish Thysanostoma thysanura
Open water; blackwater at night · 0–25 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Hairy frogfish Antennarius striatus
Sand and algae · 5–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Hairy squat lobster Lauriea siagiani
Barrel sponges · 10–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Harlequin shrimp Hymenocera picta
Rubble ledges · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Magnificent shrimpgoby Mahidolia mystacina
Silty sand and rubble · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Mandarinfish Synchiropus splendidus
Rubble at dusk · 3–15 m
2 stars of 5, usually seen in a week in Lembeh Strait
Napoleon snake eel Ophichthus bonaparti
Open sand and silt · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Ornate ghost pipefish Solenostomus paradoxus
Crinoids and soft coral · 5–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Peacock mantis shrimp Odontodactylus scyllarus
Sand and rubble burrows · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Pink-eye goby Bryaninops natans
Branching Acropora · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Purple firefish Nemateleotris decora
Rubble at the base of slopes · 20–60 m
2 stars of 5, usually seen in a week in Lembeh Strait
Razorfish Aeoliscus strigatus
Seagrass, urchins and rubble · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Redfin butterflyfish Chaetodon lunulatus
Hard coral on reef and reef slopes · 2–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Ribbon eel Rhinomuraena quaesita
Rubble and sand at reef edges · 1–60 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Royal dottyback Pictichromis paccagnellae
Rubble, coral heads and steep slopes · 5–50 m
2 stars of 5, usually seen in a week in Lembeh Strait
Salp Salpida
Blackwater, open water at night · 0–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Siphonophore Siphonophorae
Open water over deep drop-offs · 0–25 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Skunk anemonefish Amphiprion sandaracinos
Sea anemones on reef and rubble · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Spine-cheek anemonefish Premnas biaculeatus
Bubble-tip anemones on reef and rubble · 2–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Teardrop butterflyfish Chaetodon unimaculatus
Coral reef, rubble and reef slopes · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Three-spot angelfish Apolemichthys trimaculatus
Reef slopes and walls · 10–60 m
2 stars of 5, usually seen in a week in Bali
Tiger cardinalfish Cheilodipterus macrodon
Overhangs, wrecks and rubble · 2–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Whip coral goby Bryaninops yongei
Wire and whip corals · 5–45 m
2 stars of 5, usually seen in a week in Lembeh Strait
Yellow pygmy goby Lubricogobius exiguus
Bottles, cans and shells · 5–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Yellownose shrimpgoby Stonogobiops xanthorhinicus
Sand and fine rubble · 8–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Banana nudibranch Notodoris minor
Sponge-covered rock and rubble · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Banded snake eel Myrichthys colubrinus
Open sand and silt · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Bargibant's pygmy seahorse Hippocampus bargibanti
Muricella sea fans · 15–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Barramundi cod Chromileptes altivelis
Rubble, wrecks and jetty pilings · 2–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Batangas halgerda Halgerda batangas
Sponge on rubble and rock · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Blue-ringed octopus Hapalochlaena lunulata
Rubble and shell debris · 2–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait Medical emergency Bobbit worm Eunice cf. aphroditois
Sand burrows · 5–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Coleman shrimp Periclimenes colemani
Fire urchins · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Convict blenny Pholidichthys leucotaenia
Rubble and burrow systems · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Crab-eye goby Signigobius biocellatus
Fine silty sand near reef edges · 2–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Estuarine stonefish Synanceia horrida
Silt and estuarine mud · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Medical emergency Favorinus Favorinus
Egg ribbons on rubble and sponge · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Flying fish Exocoetidae
Blackwater, open water at night · 0–15 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Flying gurnard Dactyloptena orientalis
Open sand · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Harlequin crab Lissocarcinus laevis
Tube anemones on silty sand · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Harlequin sweetlips Plectorhinchus chaetodonoides
Rubble, overhangs and jetty structure · 2–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Heteropod Carinariidae
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Immortal jellyfish Turritopsis
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Lanternfish Myctophidae
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Larval flounder Bothidae
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Larval goby Gobiidae
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Larval mantis shrimp Stomatopoda
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Leptocephalus Elopomorpha
Open water over deep drop-offs · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Longtail seamoth Pegasus volitans
Sand and silt · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Megalopa Brachyura
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Metallic shrimpgoby Amblyeleotris latifasciata
Sand and rubble slopes · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Mimic octopus Thaumoctopus mimicus
Open black silt · 3–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Octopus paralarva Octopoda
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Orange-spotted filefish Oxymonacanthus longirostris
Living Acropora thickets · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Pegasus sea moth Eurypegasus draconis
Fine sand · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Phronima Phronima
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Pikachu nudibranch Thecacera pacifica
Rubble · 5–25 m
3 stars of 5, a good week should turn one up in Anilao
Rose petal bubble shell Hydatina physis
Black sand · 1–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Sea butterfly Thecosomata
Open water over deep drop-offs · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Skeleton shrimp Caprella scaura
Hydroids, algae and rope · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Soft coral ghost goby Pleurosicya boldinghi
Soft corals on silt and rubble · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Stargazer Uranoscopus sulphureus
Buried in sand · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Stingfish Minous
Silt and fine sand · 5–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Thorny seahorse Hippocampus histrix
Silt, sponge and debris · 5–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Urchin clingfish Diademichthys lineatus
Long-spined urchins on rubble · 1–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Wunderpus Wunderpus photogenicus
Rubble edges and sand · 5–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Yasha goby Stonogobiops yasha
Coarse sand and rubble slopes · 15–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Ambon scorpionfish Pteroidichthys amboinensis
Algae on silt · 5–25 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Box jellyfish Cubozoa
Open water, usually near the surface · 0–20 m
4 stars of 5, two or three a season in Lembeh Strait Medical emergency Boxer crab Lybia tessellata
Under rubble · 3–20 m
4 stars of 5, two or three a season in Lembeh Strait
Braun's pughead pipefish Bulbonaricus brauni
Living stony coral heads · 3–20 m
4 stars of 5, two or three a season in Lembeh Strait
Bumblebee shrimp Gnathophyllum americanum
Rubble and urchins · 3–20 m
4 stars of 5, two or three a season in Lembeh Strait
Comet Calloplesiops altivelis
Rubble, ledges and debris · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Denise's pygmy seahorse Hippocampus denise
Gorgonians · 18–40 m
4 stars of 5, two or three a season in Lembeh Strait
Dragon shrimp Miropandalus hardingi
Wire corals and black coral on slopes · 10–35 m
4 stars of 5, two or three a season in Lembeh Strait
Eel bornella Bornella anguilla
Hydroids on rubble · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Halimeda ghost pipefish Solenostomus halimeda
Halimeda algae · 5–25 m
4 stars of 5, two or three a season in Lembeh Strait
Lined dartfish Ptereleotris grammica
Rubble and sand below the reef · 25–45 m
4 stars of 5, two or three a season in Lembeh Strait
Long-arm octopus Macrotritopus defilippi
Silt and fine sand · 3–40 m
4 stars of 5, two or three a season in Lembeh Strait
Magnificent miamira Miamira magnifica
Rubble and sponge on slopes · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Pacific monkeyfish Erosa erosa
Black sand and silt · 5–40 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Pelagic nudibranch Cephalopyge trematoides
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Pinnate batfish Platax pinnatus
Overhangs and jetty pilings · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Pontoh's pygmy seahorse Hippocampus pontohi
Hydroids and algae · 5–25 m
4 stars of 5, two or three a season in Lembeh Strait
Purple-spotted mantis shrimp Odontodactylus latirostris
Open sand and rubble · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Randall's frogfish Antennarius randalli
Rubble and sponge · 8–31 m
4 stars of 5, two or three a season in Lembeh Strait
Randall's shrimpgoby Amblyeleotris randalli
Coarse sand and rubble · 15–50 m
4 stars of 5, two or three a season in Lembeh Strait
Ribbonfish Trachipteridae
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Sawblade shrimp Tozeuma armatum
Sea whips and gorgonians · 10–40 m
4 stars of 5, two or three a season in Lembeh Strait
Sea apple Pseudocolochirus violaceus
Rubble and rock with current · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait Caution Sharpear enope squid Ancistrocheirus lesueurii
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Simplex shrimp Phyllognathia simplex
Rubble and sponge · 5–25 m
4 stars of 5, two or three a season in Lembeh Strait
Snake blenny Xiphasia setifer
Silt and fine sand · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Solar-powered nudibranch Phyllodesmium longicirrum
Soft coral and rubble · 10–30 m
4 stars of 5, two or three a season in Lembeh Strait
Spikefin goby Discordipinna griessingeri
Coral rubble and dead coral heads · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Blanket octopus Tremoctopus gracilis
Blackwater, open water at night · 0–25 m
5 stars of 5, a handful of records in Lembeh Strait Caution Diamond squid Thysanoteuthis rhombus
Blackwater, open water at night · 0–25 m
5 stars of 5, a handful of records in Lembeh Strait
Eschmeyer's rhinopias Rhinopias eschmeyeri
Rubble slopes · 10–35 m
5 stars of 5, a handful of records in Lembeh Strait Needs treatment Ghost melibe Melibe colemani
Hydroids and rubble · 5–25 m
5 stars of 5, a handful of records in Lembeh Strait
Greater argonaut Argonauta argo
Open water over deep slopes · 0–30 m
5 stars of 5, a handful of records in Lembeh Strait
Hairy octopus Octopus sp.
Algae and hydroid patches on silt · 8–25 m
5 stars of 5, a handful of records in Lembeh Strait
Hairy shrimp Phycocaris simulans
Algae tufts on silt · 3–15 m
5 stars of 5, a handful of records in Lembeh Strait
Little green shrimp Phycocaris sp.
Colonial ascidians on rubble · 10–20 m
5 stars of 5, a handful of records in Lembeh Strait
Paper nautilus Argonauta hians
Open water, drifting debris · 0–20 m
5 stars of 5, a handful of records in Lembeh Strait
Sargassum frogfish Histrio histrio
Floating weed and drifting debris · 0–10 m
5 stars of 5, a handful of records in Lembeh Strait
Torpedo ray Torpedo sp.
Black sand and silt · 5–35 m
5 stars of 5, a handful of records in Lembeh Strait Needs treatment Arabian chromis Chromis flavaxilla
Midwater above coral in aggregations · 3–30 m
1 star of 5, found on most dives in Red Sea
Atlantic trumpetfish Aulostomus maculatus
Reef and gorgonians · 2–30 m
1 star of 5, found on most dives in Bahamas
Australian long-spined urchin Centrostephanus rodgersii
Temperate rocky reef and urchin barrens, east coast and Tasmania · 1–35 m
1 star of 5, found on most dives in Australia Caution Banded coral shrimp Stenopus hispidus
Ledges, wrecks and debris · 1–40 m
1 star of 5, found on most dives in Lembeh Strait
Banded urchin Echinothrix calamaris
Rubble and coral reef · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Bar jack Caranx ruber
Mid-water over reef and sand · 1–30 m
1 star of 5, found on most dives in Florida
Barberfish Johnrandallia nigrirostris
Cleaning stations · 5–30 m
1 star of 5, found on most dives in Cocos Island
Barred rabbitfish Siganus doliatus
Reef flats and slopes · 1–30 m
1 star of 5, found on most dives in Bali Caution Barrier Reef anemonefish Amphiprion akindynos
Host anemones on coral reef, tropical east · 1–25 m
1 star of 5, found on most dives in Australia
Bicolor blenny Ecsenius bicolor
Coral heads, rubble and jetty pilings · 2–25 m
1 star of 5, found on most dives in Lembeh Strait
Bicolor damselfish Stegastes partitus
Reef and rubble · 1–30 m
1 star of 5, found on most dives in Florida
Bigeye emperor Monotaxis grandoculis
Sand, rubble and reef edges · 3–50 m
1 star of 5, found on most dives in Bali
Bignose unicornfish Naso vlamingii
Walls and drop-offs · 5–60 m
1 star of 5, found on most dives in Bali
Bird wrasse Gomphosus varius
Reef slopes · 2–35 m
1 star of 5, found on most dives in Bali
Black dendrodoris Dendrodoris nigra
Rubble and dead coral · 0–15 m
1 star of 5, found on most dives in Lembeh Strait
Black-margined nudibranch Doriprismatica atromarginata
Sponge on rubble and rock · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Black-spotted puffer Arothron nigropunctatus
Rubble and reef edges · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Black-striped salema Brachygenys jessiae
Dense schools over rocky reef · 2–20 m
1 star of 5, found on most dives in Galapagos Islands
Blackback butterflyfish Chaetodon melannotus
Coral reef and slopes · 3–25 m
1 star of 5, found on most dives in Papua New Guinea
Blackbar soldierfish Myripristis jacobus
Caves and overhangs on the wall · 3–30 m
1 star of 5, found on most dives in Bahamas
Blackeye thicklip wrasse Hemigymnus melapterus
Sand and rubble slopes, reef margins · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Blackfin dartfish Ptereleotris evides
Rubble near coral · 3–30 m
1 star of 5, found on most dives in Papua New Guinea
Blackside hawkfish Paracirrhites forsteri
Branching coral on reef slopes · 2–35 m
1 star of 5, found on most dives in Bali
Blackspot tuskfish Choerodon anchorago
Sand, rubble and seagrass · 1–25 m
1 star of 5, found on most dives in Lembeh Strait
Blacktip bullseye Pempheris affinis
Caves and ledges on temperate reef, east coast · 2–30 m
1 star of 5, found on most dives in Australia
Blacktip grouper Epinephelus fasciatus
Reef and rubble · 3–40 m
1 star of 5, found on most dives in Red Sea
Bleeker's parrotfish Chlorurus bleekeri
Coral reef, rubble and reef slopes · 3–30 m
1 star of 5, found on most dives in Lembeh Strait
Blue chromis Azurina cyanea
Mid-water above the wall · 5–35 m
1 star of 5, found on most dives in Bahamas
Blue devil damselfish Chrysiptera cyanea
Shallow rubble, coral heads and reef flats · 0–12 m
1 star of 5, found on most dives in Lembeh Strait
Blue sea star Linckia laevigata
Rubble, sand and reef flat · 0–25 m
1 star of 5, found on most dives in Lembeh Strait
Blue tang Acanthurus coeruleus
Reef and rock · 1–30 m
1 star of 5, found on most dives in Florida Caution Blue-and-gold snapper Lutjanus viridis
Stationary schools under ledges · 3–30 m
1 star of 5, found on most dives in Galapagos Islands
Blue-and-yellow fusilier Caesio teres
Open water over slopes and drop-offs · 3–45 m
1 star of 5, found on most dives in Bali
Blue-black urchin Echinothrix diadema
Rubble, reef edges and jetty structure · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Blue-green chromis Chromis viridis
Branching coral on reef flats and slopes · 1–20 m
1 star of 5, found on most dives in Lembeh Strait
Blueband goby Valenciennea strigata
Sand near coral · 1–25 m
1 star of 5, found on most dives in Bali
Bluehead wrasse Thalassoma bifasciatum
Reef and rubble · 1–30 m
1 star of 5, found on most dives in Florida
Bluespine unicornfish Naso unicornis
Reef slopes, crests and surge zones · 3–40 m
1 star of 5, found on most dives in Bali Caution Bluespotted cornetfish Fistularia commersonii
Sand, rubble and reef edges · 1–40 m
1 star of 5, found on most dives in Lembeh Strait
Bluestripe snapper Lutjanus kasmira
Reef slopes, walls and wrecks · 3–50 m
1 star of 5, found on most dives in Bali
Bluestriped grunt Haemulon sciurus
Under ledges and around coral heads · 2–25 m
1 star of 5, found on most dives in Florida
Bluntheaded wrasse Thalassoma amblycephalum
Reef crest, rubble and shallow slopes · 0–15 m
1 star of 5, found on most dives in Lembeh Strait
Boomerang triggerfish Sufflamen bursa
Rubble, sand and reef slopes · 3–40 m
1 star of 5, found on most dives in Lembeh Strait
Boulder star coral Orbicella annularis
Mid-depth reef · 3–25 m
1 star of 5, found on most dives in Bahamas
Branching fire coral Millepora alcicornis
Shallow reef, gorgonians and wrecks · 1–25 m
1 star of 5, found on most dives in Florida Caution Bristle worm Chloeia
Sand, rubble and silt · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Brown chromis Azurina multilineata
Mid-water above the wall · 5–35 m
1 star of 5, found on most dives in Bahamas
Brown surgeonfish Acanthurus nigrofuscus
Reef slopes and rocky shallows · 1–30 m
1 star of 5, found on most dives in Bali Caution Brown tang Zebrasoma scopas
Coral reef, rubble and reef slopes · 2–50 m
1 star of 5, found on most dives in Lembeh Strait
Canary wrasse Halichoeres chrysus
Sand and rubble · 5–60 m
1 star of 5, found on most dives in Lembeh Strait
Caribbean reef shark Carcharhinus perezii
Reef and wall, and at organised feeds · 5–30 m
1 star of 5, found on most dives in Bahamas
Cauliflower coral Pocillopora damicornis
Shallow reef · 2–20 m
1 star of 5, found on most dives in Cocos Island
Checkerboard wrasse Halichoeres hortulanus
Sand, rubble and reef edges · 2–30 m
1 star of 5, found on most dives in Lembeh Strait
Chocolate chip sea star Nidorellia armata
Rock and rubble · 2–25 m
1 star of 5, found on most dives in Galapagos Islands
Chocolate hind Cephalopholis boenak
Silty reef, rubble and jetty pilings · 2–30 m
1 star of 5, found on most dives in Lembeh Strait
Clarion angelfish Holacanthus clarionensis
Volcanic rock at all depths · 3–30 m
1 star of 5, found on most dives in Islas Revillagigedo
Clarion damselfish Stegastes redemptus
Shallow volcanic rock · 1–20 m
1 star of 5, found on most dives in Islas Revillagigedo
Collector urchin Tripneustes gratilla
Seagrass, shallow sand and rubble · 0–25 m
1 star of 5, found on most dives in Lembeh Strait Caution Common sea fan Gorgonia ventalina
Shallow reef, across the current · 1–25 m
1 star of 5, found on most dives in Florida
Coney Cephalopholis fulva
Reef and wall · 3–35 m
1 star of 5, found on most dives in Bahamas
Convict surgeonfish Acanthurus triostegus
Reef flats, rubble and shallow slopes · 0–20 m
1 star of 5, found on most dives in Lembeh Strait
Coral grouper Cephalopholis miniata
Reef slopes and walls · 3–50 m
1 star of 5, found on most dives in Bali
Coral hawkfish Cirrhitichthys oxycephalus
Perched on rock and rubble · 3–30 m
1 star of 5, found on most dives in Islas Revillagigedo
Cortez rainbow wrasse Thalassoma lucasanum
Rocky reef · 2–25 m
1 star of 5, found on most dives in Galapagos Islands
Creole wrasse Bodianus parrae
Mid-water along the wall · 5–35 m
1 star of 5, found on most dives in Bahamas
Cushion star Culcita novaeguineae
Rubble and coral edges · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Daisy parrotfish Chlorurus sordidus
Coral reef, rubble and reef flats · 2–30 m
1 star of 5, found on most dives in Lembeh Strait
Dark-banded fusilier Pterocaesio tile
Open water over slopes and drop-offs · 3–45 m
1 star of 5, found on most dives in Bali
Dash-and-dot goatfish Parupeneus barberinus
Sand, rubble and seagrass · 1–40 m
1 star of 5, found on most dives in Lembeh Strait
Decorated goby Istigobius decoratus
Open sand and fine rubble · 1–25 m
1 star of 5, found on most dives in Lembeh Strait
Dendronephthya soft coral Dendronephthya
Current-exposed slopes, walls and wrecks · 5–40 m
1 star of 5, found on most dives in Lembeh Strait
Devil firefish Pterois miles
Overhangs and wrecks, hunting at dusk · 2–40 m
1 star of 5, found on most dives in Red Sea Needs treatment Donkey dung sea cucumber Holothuria mexicana
Seagrass and sand flats · 1–20 m
1 star of 5, found on most dives in Bahamas
Dory snapper Lutjanus fulviflamma
Jetty pilings, rubble and reef edges · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Eastern blue groper Achoerodus viridis
Temperate rocky reef, New South Wales · 1–30 m
1 star of 5, found on most dives in Australia
Eastern hulafish Trachinops taeniatus
Cave mouths and gutters, temperate rocky reef · 2–25 m
1 star of 5, found on most dives in Australia
Ehrenberg's snapper Lutjanus ehrenbergii
Schools around coral heads and jetties · 2–25 m
1 star of 5, found on most dives in Red Sea
Elegant unicornfish Naso elegans
Grazing reef · 2–30 m
1 star of 5, found on most dives in Maldives
Eleven-armed sea star Coscinasterias muricata
Temperate rocky reef and jetty pylons · 0–30 m
1 star of 5, found on most dives in Australia
Emperor angelfish Pomacanthus imperator
Reef slopes and walls · 3–45 m
1 star of 5, found on most dives in Bali
Exquisite butterflyfish Chaetodon austriacus
Coral-rich reef, in pairs · 2–25 m
1 star of 5, found on most dives in Red Sea
Feather duster worm Sabellastarte
Rubble and sand · 1–25 m
1 star of 5, found on most dives in Lembeh Strait
Feather star Comaster schlegelii
Rubble, sponge and current edges · 1–40 m
1 star of 5, found on most dives in Lembeh Strait
Fire coral Millepora
Reef flats, coral heads and wrecks · 1–25 m
1 star of 5, found on most dives in Lembeh Strait Caution Five-lined cardinalfish Cheilodipterus quinquelineatus
Coral heads, rubble and urchins · 1–40 m
1 star of 5, found on most dives in Lembeh Strait
Flag cabrilla Epinephelus labriformis
Rocky reef and rubble · 2–30 m
1 star of 5, found on most dives in Galapagos Islands
Flamingo tongue Cyphoma gibbosum
On sea fans and sea plumes · 1–30 m
1 star of 5, found on most dives in Bahamas
Foureye butterflyfish Chaetodon capistratus
Reef and rubble · 1–25 m
1 star of 5, found on most dives in Florida
French angelfish Pomacanthus paru
Reef and wall · 3–30 m
1 star of 5, found on most dives in Bahamas
French grunt Haemulon flavolineatum
Under ledges and coral heads · 2–25 m
1 star of 5, found on most dives in Florida
Galapagos gregory Stegastes arcifrons
Rocky reef · 2–25 m
1 star of 5, found on most dives in Galapagos Islands
Galapagos grunt Anisotremus espinozai
Resting in loose schools by day · 3–30 m
1 star of 5, found on most dives in Galapagos Islands
Galapagos hermit crab Calcinus explorator
Shallow rock and tide pools · 0–15 m
1 star of 5, found on most dives in Galapagos Islands
Galapagos pencil urchin Eucidaris galapagensis
Rock crevices by day · 2–30 m
1 star of 5, found on most dives in Galapagos Islands
Galapagos sea lion Zalophus wollebaeki
Everywhere · 0–30 m
1 star of 5, found on most dives in Galapagos Islands
Giant barrel sponge Xestospongia muta
Reef slope and wall · 10–40 m
1 star of 5, found on most dives in Florida
Giant Caribbean anemone Condylactis gigantea
Shallow reef and rubble · 1–25 m
1 star of 5, found on most dives in Florida
Giant clam Tridacna squamosa
Reef flats and slopes · 1–20 m
1 star of 5, found on most dives in Bali
Giant damselfish Microspathodon dorsalis
Rock and boulder ground · 1–25 m
1 star of 5, found on most dives in Islas Revillagigedo
Giant manta Mobula birostris
Around the rock at San Benedicto and Socorro, most days in season · 5–35 m
1 star of 5, found on most dives in Islas Revillagigedo
Glass anemone shrimp Ancylocaris brevicarpalis
Large host anemones · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Graeffe's sea cucumber Pearsonothuria graeffei
Sand and rubble · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Great barracuda Sphyraena barracuda
Above reef and wrecks · 1–30 m
1 star of 5, found on most dives in Florida
Great star coral Montastraea cavernosa
Reef and wall · 3–30 m
1 star of 5, found on most dives in Florida
Green sea urchin Lytechinus semituberculatus
Rock and algae, often carrying debris · 1–25 m
1 star of 5, found on most dives in Galapagos Islands
Green turtle Chelonia mydas
Reef and seagrass, tropical north; Ningaloo and the Great Barrier Reef · 1–30 m
1 star of 5, found on most dives in Australia
Grey snapper Lutjanus griseus
Mangroves, bridges and wrecks; common at Blue Heron Bridge · 1–30 m
1 star of 5, found on most dives in Florida
Guineafowl puffer Arothron meleagris
Rocky reef · 2–25 m
1 star of 5, found on most dives in Galapagos Islands
Halfbeak Hemiramphidae
Surface water over shallow sand and around pilings · 0–3 m
1 star of 5, found on most dives in Lembeh Strait
Halfspotted hind Cephalopholis hemistiktos
Reef and rubble · 3–30 m
1 star of 5, found on most dives in Red Sea
Honeycomb grouper Epinephelus merra
Rubble, coral heads and reef flats · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Horned sea star Protoreaster nodosus
Sand, rubble and seagrass · 1–20 m
1 star of 5, found on most dives in Dauin & Dumaguete
Humbug dascyllus Dascyllus aruanus
Branching coral on reef flats and rubble · 0–20 m
1 star of 5, found on most dives in Lembeh Strait
Humpback snapper Lutjanus gibbus
Reef slopes and drop-offs · 3–45 m
1 star of 5, found on most dives in Bali
Indian Ocean birdwrasse Gomphosus caeruleus
Reef, moving constantly · 2–30 m
1 star of 5, found on most dives in Maldives
Indian triggerfish Melichthys indicus
Reef slopes and drop-offs · 3–30 m
1 star of 5, found on most dives in Maldives
Indo-Pacific sergeant Abudefduf vaigiensis
Reef flats, jetty pilings and shallow rubble · 0–15 m
1 star of 5, found on most dives in Lembeh Strait
Keyhole angelfish Centropyge tibicen
Rubble, coral heads and reef slopes · 3–35 m
1 star of 5, found on most dives in Lembeh Strait
King angelfish Holacanthus passer
Rocky reef; also cleans · 3–30 m
1 star of 5, found on most dives in Galapagos Islands
Klein's butterflyfish Chaetodon kleinii
Coral heads and reef slopes · 3–50 m
1 star of 5, found on most dives in Lembeh Strait
Klunzinger's wrasse Thalassoma rueppellii
Shallow reef, constantly moving · 0–20 m
1 star of 5, found on most dives in Red Sea
Leopard coralgrouper Plectropomus leopardus
Coral reef and slopes · 3–50 m
1 star of 5, found on most dives in Papua New Guinea
Leopard sea cucumber Bohadschia argus
Sand and reef flat · 2–30 m
1 star of 5, found on most dives in Bali Caution Lined surgeonfish Acanthurus lineatus
Reef crest and shallow slopes · 0–15 m
1 star of 5, found on most dives in Bali Caution Long-spined urchin Diadema setosum
Rubble, rock and jetty pilings · 0–30 m
1 star of 5, found on most dives in Lembeh Strait Needs treatment Longfin bannerfish Heniochus acuminatus
Reef slopes and walls · 3–45 m
1 star of 5, found on most dives in Bali
Luzon sea star Echinaster luzonicus
Sand, rubble and slopes · 2–30 m
1 star of 5, found on most dives in Lembeh Strait
Mado Atypichthys strigatus
Temperate rocky reef, east coast · 1–30 m
1 star of 5, found on most dives in Australia
Maldive anemonefish Amphiprion nigripes
In magnificent sea anemone · 2–25 m
1 star of 5, found on most dives in Maldives
Manybar goatfish Parupeneus multifasciatus
Rubble, sand and reef edges · 2–35 m
1 star of 5, found on most dives in Lembeh Strait
Marbled ray Taeniurops meyeni
Sand channels and under ledges · 5–30 m
1 star of 5, found on most dives in Cocos Island
Marginate dascyllus Dascyllus marginatus
Branching coral, retreating into it · 1–20 m
1 star of 5, found on most dives in Red Sea
Masked butterflyfish Chaetodon semilarvatus
Sheltering under table coral in pairs · 3–20 m
1 star of 5, found on most dives in Red Sea
Masked pufferfish Arothron diadematus
Reef and coral heads · 2–25 m
1 star of 5, found on most dives in Red Sea
Masked rabbitfish Siganus puellus
Reef slopes · 2–30 m
1 star of 5, found on most dives in Bali Caution Mexican hogfish Bodianus diplotaenia
Rocky reef · 3–40 m
1 star of 5, found on most dives in Galapagos Islands
Mexican long-spined urchin Diadema mexicanum
Crevices and open rock · 1–25 m
1 star of 5, found on most dives in Islas Revillagigedo Caution Moon wrasse Thalassoma lunare
Coral reef, rubble and reef flats · 1–20 m
1 star of 5, found on most dives in Lembeh Strait
Moorish idol Zanclus cornutus
Coral heads, rubble and reef slopes · 2–40 m
1 star of 5, found on most dives in Lembeh Strait
Narrow-lined puffer Arothron manilensis
Sand, rubble and seagrass · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Nassarius snail Nassarius
Open sand · 1–25 m
1 star of 5, found on most dives in Lembeh Strait
Neon damselfish Pomacentrus coelestis
Rubble and reef edges · 1–15 m
1 star of 5, found on most dives in Lembeh Strait
Net fire coral Millepora dichotoma
Shallow reef and reef crest · 1–20 m
1 star of 5, found on most dives in Red Sea Caution Network pipefish Corythoichthys flavofasciatus
Rubble and sand near reef · 1–25 m
1 star of 5, found on most dives in Lembeh Strait
Nurse shark Ginglymostoma cirratum
Under ledges and on shallow sand · 2–25 m
1 star of 5, found on most dives in Bahamas Needs treatment Ocean surgeonfish Acanthurus tractus
Reef and rock · 1–25 m
1 star of 5, found on most dives in Florida
One-spot puller Chromis hypsilepis
Above temperate rocky reef, east coast · 3–30 m
1 star of 5, found on most dives in Australia
Orange cup coral Tubastraea coccinea
Shaded walls and overhangs · 3–30 m
1 star of 5, found on most dives in Galapagos Islands
Orangespine unicornfish Naso lituratus
Reef slopes and walls · 3–45 m
1 star of 5, found on most dives in Bali Caution Orangutan crab Achaeus japonicus
Bubble coral · 5–25 m
1 star of 5, found on most dives in Lembeh Strait
Orbiculate cardinalfish Sphaeramia orbicularis
Jetty pilings, mangrove roots and shallow rubble · 0–5 m
1 star of 5, found on most dives in Lembeh Strait
Pacific creolefish Cephalopholis colonus
Midwater in large aggregations · 5–40 m
1 star of 5, found on most dives in Galapagos Islands
Pacific slate pencil urchin Eucidaris thouarsii
Wedged in rock crevices · 1–25 m
1 star of 5, found on most dives in Islas Revillagigedo
Panamic fanged blenny Ophioblennius steindachneri
Shallow surge zone, territorial · 0–12 m
1 star of 5, found on most dives in Galapagos Islands
Panamic green moray Gymnothorax castaneus
Boulder crevices, head out · 3–30 m
1 star of 5, found on most dives in Galapagos Islands
Panamic sergeant major Abudefduf troschelii
Shallow rocky reef · 0–15 m
1 star of 5, found on most dives in Galapagos Islands
Panamic soldierfish Myripristis leiognathus
Caves and overhangs by day · 3–25 m
1 star of 5, found on most dives in Galapagos Islands
Panda butterflyfish Chaetodon adiergastos
Coral reef, rubble and reef slopes · 3–30 m
1 star of 5, found on most dives in Anilao
Peacock grouper Cephalopholis argus
Reef slopes · 2–45 m
1 star of 5, found on most dives in Bali
Pearlscale angelfish Centropyge vrolikii
Rubble and coral heads · 3–25 m
1 star of 5, found on most dives in Lembeh Strait
Picasso triggerfish Rhinecanthus aculeatus
Reef flats and lagoon sand · 0–12 m
1 star of 5, found on most dives in Papua New Guinea Caution Porcelain anemone crab Neopetrolisthes maculatus
Large host anemones · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Powderblue surgeonfish Acanthurus leucosternon
Grazing shallow reef in large schools · 2–25 m
1 star of 5, found on most dives in Maldives
Princess parrotfish Scarus taeniopterus
Reef · 3–25 m
1 star of 5, found on most dives in Bahamas
Purple sea urchin Heliocidaris erythrogramma
Rock crevices on temperate reef · 0–30 m
1 star of 5, found on most dives in Australia
Pustulose phyllidiella Phyllidiella pustulosa
Sponge on rubble and rock · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Pyjama cardinalfish Sphaeramia nematoptera
Branching coral and rubble · 1–15 m
1 star of 5, found on most dives in Lembeh Strait
Queen parrotfish Scarus vetula
Reef · 3–25 m
1 star of 5, found on most dives in Bahamas
Raccoon butterflyfish Chaetodon lunula
Reef flats and slopes · 2–30 m
1 star of 5, found on most dives in Bali
Red morwong Morwong fuscus
Temperate rocky reef, east coast · 1–30 m
1 star of 5, found on most dives in Australia
Red Sea anemonefish Amphiprion bicinctus
Host anemones on reef and sand · 2–30 m
1 star of 5, found on most dives in Red Sea
Red Sea bannerfish Heniochus intermedius
Reef slopes, often in pairs · 3–40 m
1 star of 5, found on most dives in Red Sea
Red Sea goatfish Parupeneus forsskali
Sand and rubble, probing with barbels · 2–25 m
1 star of 5, found on most dives in Red Sea
Red Sea soft coral Dendronephthya klunzingeri
Current-exposed reef · 5–40 m
1 star of 5, found on most dives in Red Sea
Redband parrotfish Sparisoma aurofrenatum
Reef · 2–25 m
1 star of 5, found on most dives in Bahamas
Redbreasted wrasse Cheilinus fasciatus
Rubble, sand and reef slopes · 2–40 m
1 star of 5, found on most dives in Lembeh Strait
Redtail butterflyfish Chaetodon collare
Reef, usually in pairs or small groups · 2–25 m
1 star of 5, found on most dives in Maldives
Redtail filefish Pervagor melanocephalus
Rubble, coral heads and reef slopes · 3–30 m
1 star of 5, found on most dives in Lembeh Strait
Redtooth triggerfish Odonus niger
Open water over walls and drop-offs · 5–40 m
1 star of 5, found on most dives in Bali
Regal angelfish Pygoplites diacanthus
Coral reef and slopes · 3–48 m
1 star of 5, found on most dives in Papua New Guinea
Ringtailed cardinalfish Ostorhinchus aureus
Ledges, jetty pilings, rubble and wrecks · 3–40 m
1 star of 5, found on most dives in Lembeh Strait
Rock-boring urchin Echinometra mathaei
Rock, dead coral and jetty pilings · 0–20 m
1 star of 5, found on most dives in Lembeh Strait Caution Rusty parrotfish Scarus ferrugineus
Grazing reef · 2–30 m
1 star of 5, found on most dives in Red Sea
Saddled butterflyfish Chaetodon ephippium
Reef slopes and flats · 2–35 m
1 star of 5, found on most dives in Bali
Sailfin tang Zebrasoma velifer
Reef slopes and flats · 2–35 m
1 star of 5, found on most dives in Bali
Sally lightfoot crab Grapsus grapsus
Intertidal rock · 0–2 m
1 star of 5, found on most dives in Galapagos Islands
Sand hermit crab Diogenes
Open sand and silt · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Sand-sifting sea star Archaster typicus
Shallow sand and seagrass · 0–15 m
1 star of 5, found on most dives in Lembeh Strait
Scalefin anthias Pseudanthias squamipinnis
Reef slopes, walls and current-swept coral · 5–45 m
1 star of 5, found on most dives in Bali
Scalloped hammerhead Sphyrna lewini
Seamounts and cleaning stations · 15–40 m
1 star of 5, found on most dives in Cocos Island
Schoolmaster snapper Lutjanus apodus
Reef, wrecks and mangrove edges · 2–25 m
1 star of 5, found on most dives in Florida
Scissortail damselfish Azurina atrilobata
Open water above rock · 3–30 m
1 star of 5, found on most dives in Islas Revillagigedo
Scissortail sergeant Abudefduf sexfasciatus
Shallow reef; males guard egg patches · 1–15 m
1 star of 5, found on most dives in Red Sea
Sea cucumber Holothuria
Open sand and rubble · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Sea hare Dolabella auricularia
Weed and rubble on silt · 0–20 m
1 star of 5, found on most dives in Lembeh Strait Caution Sea pen Pteroeides sp.
Silt and fine sand · 3–40 m
1 star of 5, found on most dives in Lembeh Strait
Sea squirt Polycarpa aurata
Rubble, rock and jetty pilings · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Sergeant major Abudefduf saxatilis
Any hard bottom, bridges and pilings · 0–25 m
1 star of 5, found on most dives in Florida
Sharpnose puffer Canthigaster rostrata
Reef and rubble · 1–30 m
1 star of 5, found on most dives in Florida Needs treatment Silver sweep Scorpis lineolata
Mid-water over temperate rocky reef · 1–30 m
1 star of 5, found on most dives in Australia
Silverside Atherinomorus
Jetty pilings, shallow rubble and caves · 0–15 m
1 star of 5, found on most dives in Lembeh Strait
Six-banded angelfish Pomacanthus sexstriatus
Coral reef and slopes · 3–45 m
1 star of 5, found on most dives in Papua New Guinea
Sixbar wrasse Thalassoma hardwicke
Shallow reef and lagoon · 1–15 m
1 star of 5, found on most dives in Maldives
Slimy sea plume Antillogorgia americana
Shallow reef · 1–25 m
1 star of 5, found on most dives in Florida
Slippery dick Halichoeres bivittatus
Rubble, sand and seagrass · 1–25 m
1 star of 5, found on most dives in Florida
Small giant clam Tridacna maxima
Embedded in reef, mantle exposed · 1–20 m
1 star of 5, found on most dives in Red Sea
Sohal surgeonfish Acanthurus sohal
Shallow reef crest and surge zone · 0–10 m
1 star of 5, found on most dives in Red Sea
Southern Maori wrasse Ophthalmolepis lineolata
Temperate rocky reef, east and south coasts · 3–40 m
1 star of 5, found on most dives in Australia
Southern stingray Hypanus americanus
Sand flats; the fed aggregation at Stingray City · 1–20 m
1 star of 5, found on most dives in Cayman Islands Needs treatment Spaghetti worm Loimia medusa
Silt and sand · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Spanish hogfish Bodianus rufus
Reef and wall · 3–30 m
1 star of 5, found on most dives in Bahamas
Speckled sandperch Parapercis hexophtalma
Open sand and rubble · 1–25 m
1 star of 5, found on most dives in Lembeh Strait
Spotted goatfish Pseudupeneus maculatus
Sand and rubble · 1–25 m
1 star of 5, found on most dives in Florida
Spotted parrotfish Cetoscarus ocellatus
Coral reef and slopes · 3–35 m
1 star of 5, found on most dives in Papua New Guinea
Staghorn damselfish Amblyglyphidodon curacao
Branching coral on reef flats and slopes · 1–20 m
1 star of 5, found on most dives in Papua New Guinea
Stinging hydroid Aglaophenia cupressina
Rubble, rock and wrecks · 1–40 m
1 star of 5, found on most dives in Lembeh Strait Caution Striated surgeonfish Ctenochaetus striatus
Coral reef, rubble and reef flats · 2–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Striped poison-fang blenny Meiacanthus grammistes
Rubble, coral heads and jetty pilings · 1–25 m
1 star of 5, found on most dives in Lembeh Strait Caution Synaptid sea cucumber Synapta maculata
Rubble, seagrass and silt · 0–20 m
1 star of 5, found on most dives in Lembeh Strait
Table coral Acropora
Reef flats, crests and slopes · 1–25 m
1 star of 5, found on most dives in Bali
Tail-spot wrasse Halichoeres melanurus
Rubble, coral heads and reef flats · 1–15 m
1 star of 5, found on most dives in Lembeh Strait
Teira batfish Platax teira
Wrecks and reef slopes · 3–40 m
1 star of 5, found on most dives in Bali
Threadfin butterflyfish Chaetodon auriga
Reef flats, rubble and coral heads · 1–30 m
1 star of 5, found on most dives in Lembeh Strait
Three-striped whiptail Pentapodus trivittatus
Sand, rubble and reef edges · 2–30 m
1 star of 5, found on most dives in Lembeh Strait
Threespot dascyllus Dascyllus trimaculatus
Anemones, coral heads and rubble · 1–40 m
1 star of 5, found on most dives in Lembeh Strait
Trumpetfish Aulostomus chinensis
Coral reef, rubble and sea whips · 2–40 m
1 star of 5, found on most dives in Lembeh Strait
Tube anemone Cerianthus filiformis
Silt and fine sand · 3–40 m
1 star of 5, found on most dives in Lembeh Strait
Tube sponge Callyspongia
Rubble slopes and reef edges · 3–40 m
1 star of 5, found on most dives in Lembeh Strait
Two-lined monocle bream Scolopsis bilineata
Rubble, sand and reef edges · 1–25 m
1 star of 5, found on most dives in Lembeh Strait
Vagabond butterflyfish Chaetodon vagabundus
Reef flats, rubble and jetty pilings · 1–25 m
1 star of 5, found on most dives in Lembeh Strait
Valentin's sharpnose puffer Canthigaster valentini
Coral reef, rubble and reef slopes · 2–45 m
1 star of 5, found on most dives in Lembeh Strait Caution Varicose phyllidia Phyllidia varicosa
Sponge-covered rock and rubble · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Caution Vermiculated angelfish Chaetodontoplus mesoleucus
Rubble, coral heads and jetty pilings · 3–25 m
1 star of 5, found on most dives in Lembeh Strait
Whip coral Cirrhipathes
Slopes, walls and rubble with current · 5–45 m
1 star of 5, found on most dives in Lembeh Strait
White grunt Haemulon plumierii
Reef, rubble and sand edges · 2–30 m
1 star of 5, found on most dives in Florida
White-ear Parma microlepis
Temperate rocky reef, east coast · 2–30 m
1 star of 5, found on most dives in Australia Caution Whitebarred goby Amblygobius phalaena
Sand and rubble at the foot of a slope · 2–25 m
1 star of 5, found on most dives in Lembeh Strait
Whitecheek surgeonfish Acanthurus nigricans
Rock and boulder ground · 3–30 m
1 star of 5, found on most dives in Islas Revillagigedo Caution Whitetip reef shark Triaenodon obesus
Stacked on the ledges at Roca Partida and resting on rock · 10–40 m
1 star of 5, found on most dives in Islas Revillagigedo
Xenia soft coral Xenia
Rubble, reef flats and slopes · 2–25 m
1 star of 5, found on most dives in Lembeh Strait
Yellow goatfish Mulloidichthys martinicus
Above sand and reef · 1–30 m
1 star of 5, found on most dives in Florida
Yellowback fusilier Caesio xanthonota
Midwater over reef in schools · 3–30 m
1 star of 5, found on most dives in Maldives
Yellowfin surgeonfish Acanthurus xanthopterus
Rock and boulder ground · 3–30 m
1 star of 5, found on most dives in Islas Revillagigedo
Yellowhead wrasse Halichoeres garnoti
Reef · 2–30 m
1 star of 5, found on most dives in Bahamas
Yellowstriped cardinalfish Ostorhinchus cyanosoma
Coral heads, rubble and urchins · 2–50 m
1 star of 5, found on most dives in Lembeh Strait
Yellowtail coris Coris gaimard
Rubble and reef slopes · 2–40 m
1 star of 5, found on most dives in Bali
Yellowtail snapper Ocyurus chrysurus
Mid-water over reef · 3–35 m
1 star of 5, found on most dives in Florida
Yellowtail surgeonfish Prionurus laticlavius
Grazing rocky reef in schools · 2–25 m
1 star of 5, found on most dives in Galapagos Islands
Yellowtail tubelip Diproctacanthus xanthurus
Coral heads and rubble · 2–25 m
1 star of 5, found on most dives in Lembeh Strait
Zebra lionfish Dendrochirus zebra
Rubble, debris and jetty pilings · 1–30 m
1 star of 5, found on most dives in Lembeh Strait Needs treatment Zoanthid Zoanthidea
Dead coral, rubble and rock · 1–25 m
1 star of 5, found on most dives in Lembeh Strait Caution Almaco jack Seriola rivoliana
Open water over reef · 5–40 m
2 stars of 5, usually seen in a week in Galapagos Islands
Ambanoro shrimpgoby Vanderhorstia ambanoro
Fine sand and silt · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Anemone hermit crab Dardanus pedunculatus
Sand and rubble · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Arabian angelfish Pomacanthus asfur
Coral heads and sheltered reef · 3–30 m
2 stars of 5, usually seen in a week in Red Sea
Arabian picassofish Rhinecanthus assasi
Sand and rubble near reef · 2–25 m
2 stars of 5, usually seen in a week in Red Sea
Asteronotus Asteronotus cespitosus
Sponge on rubble and silt · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Atlantic spotted moray Gymnothorax moringa
Reef and rubble · 1–30 m
2 stars of 5, usually seen in a week in Florida Needs treatment Atlantic squirrelfish Holocentrus adscensionis
Under ledges and in caves · 3–30 m
2 stars of 5, usually seen in a week in Florida
Australian soldierfish Gymnapistes marmoratus
Jetty pylons, weed and seagrass, temperate south · 0–25 m
2 stars of 5, usually seen in a week in Australia Needs treatment Azure parrotfish Scarus compressus
Rocky reef · 3–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Balloonfish Diodon holocanthus
Under ledges by day · 2–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Banded butterflyfish Chaetodon striatus
Reef · 3–25 m
2 stars of 5, usually seen in a week in Florida
Banded pipefish Dunckerocampus dactyliophorus
Crevices, overhangs and rubble · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Banded sea krait Laticauda colubrina
Rubble, coral heads and reef slopes · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Medical emergency Banded sole Soleichthys heterorhinos
Open sand and silt · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Bandtail puffer Sphoeroides spengleri
Sand, rubble and seagrass; Blue Heron Bridge · 1–20 m
2 stars of 5, usually seen in a week in Florida Needs treatment Barred flagtail Kuhlia mugil
Surge zone, reef flats and shallow rock · 0–10 m
2 stars of 5, usually seen in a week in Bali
Barred hamlet Hypoplectrus puella
Reef and rubble · 3–25 m
2 stars of 5, usually seen in a week in Florida
Barred thicklip wrasse Hemigymnus fasciatus
Coral reef and slopes · 1–30 m
2 stars of 5, usually seen in a week in Papua New Guinea
Bengal snapper Lutjanus bengalensis
Schools around coral heads · 3–30 m
2 stars of 5, usually seen in a week in Maldives
Bicolor angelfish Centropyge bicolor
Rubble and coral heads · 5–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Bigeye trevally Caranx sexfasciatus
Open water over slopes, walls and wrecks · 5–50 m
2 stars of 5, usually seen in a week in Bali
Bigscale soldierfish Myripristis berndti
Caves and overhangs · 5–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Black brittle star Ophiocoma aethiops
Under rock by day, arms out at night · 2–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Black coral Antipathes
Deep slopes and walls · 20–60 m
2 stars of 5, usually seen in a week in Lembeh Strait
Black damsel Neoglyphidodon melas
Soft coral on rubble and reef flats · 1–12 m
2 stars of 5, usually seen in a week in Lembeh Strait
Black durgon Melichthys niger
Above the wall · 3–30 m
2 stars of 5, usually seen in a week in Bahamas
Black grouper Mycteroperca bonaci
Reef edge and wall · 10–35 m
2 stars of 5, usually seen in a week in Bahamas
Black jack Caranx lugubris
Above walls and offshore rock · 10–40 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Black phyllidiella Phyllidiella nigra
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Black snapper Macolor niger
Reef slopes, drop-offs and wrecks · 5–45 m
2 stars of 5, usually seen in a week in Bali
Black-blotched porcupinefish Diodon liturosus
Overhangs, rubble and reef slopes · 3–35 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Blackfin barracuda Sphyraena qenie
Open water over drop-offs and current-swept reef · 5–50 m
2 stars of 5, usually seen in a week in Papua New Guinea
Blackspotted sweetlips Plectorhinchus gaterinus
Resting in loose schools by day · 3–30 m
2 stars of 5, usually seen in a week in Red Sea
Blacktip cardinalfish Apogon atradorsatus
Caves and overhangs in aggregations · 3–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Blacktip reef shark Carcharhinus melanopterus
Reef flats, lagoons and shallow slopes · 1–25 m
2 stars of 5, usually seen in a week in Papua New Guinea
Blue blanquillo Malacanthus latovittatus
Open sand and rubble · 5–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Blue club tunicate Rhopalaea
Rubble and reef slopes · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Blue dragon nudibranch Pteraeolidia semperi
Hydroids on rubble · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Blue swimmer crab Portunus pelagicus
Sand and seagrass · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Blue trevally Ferdauia ferdau
Sand flats and reef edges · 3–40 m
2 stars of 5, usually seen in a week in Maldives
Blue tuxedo urchin Mespilia globulus
Rubble and sand · 2–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Blue-chin parrotfish Scarus ghobban
Grazing rocky reef · 3–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Blue-girdled angelfish Pomacanthus navarchus
Coral heads, rubble and reef slopes · 3–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Blue-legged hermit crab Calcinus elegans
Shallow rock and rubble · 1–12 m
2 stars of 5, usually seen in a week in Lembeh Strait
Blue-ringed angelfish Pomacanthus annularis
Jetty pilings, wrecks and silty reef · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Blue-spotted boxfish Ostracion meleagris
Coral reef, rubble and reef slopes · 2–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Blue-spotted ribbontail ray Taeniura lymma
Sand, rubble and under ledges · 2–25 m
2 stars of 5, usually seen in a week in Bali Needs treatment Blue-spotted shrimpgoby Cryptocentrus caeruleopunctatus
Silty sand and rubble · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Blue-spotted stingray Neotrygon kuhlii
Sand and seagrass · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Bluebell tunicate Clavelina
Rubble, dead coral and jetty structure · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Bluefin trevally Caranx melampygus
Reef slopes, drop-offs and sand · 3–45 m
2 stars of 5, usually seen in a week in Bali
Bluespotted surgeonfish Ctenochaetus marginatus
Rock and boulder ground · 3–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Bluestreak damselfish Neoglyphidodon nigroris
Coral reef and slopes · 2–25 m
2 stars of 5, usually seen in a week in Papua New Guinea
Bluestripe pipefish Doryrhamphus excisus
Crevices, ledges and rubble · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Bluestriped fangblenny Plagiotremus rhinorhynchos
Reef edges, rubble and wrecks · 1–40 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Bottlenose dolphin Tursiops truncatus
Around the rock and often on the dive itself · 0–25 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Bristletail filefish Acreichthys tomentosus
Seagrass, weed and rubble · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Broomtail wrasse Cheilinus lunulatus
Reef and rubble · 3–30 m
2 stars of 5, usually seen in a week in Red Sea
Brown dottyback Pseudochromis fuscus
Rubble and coral margins · 2–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Brown garden eel Heteroconger longissimus
Open sand colonies · 5–30 m
2 stars of 5, usually seen in a week in Bahamas
Brown sea cucumber Isostichopus fuscus
Rock and sand · 3–30 m
2 stars of 5, usually seen in a week in Galapagos Islands
Brown-and-white butterflyfish Hemitaurichthys zoster
Midwater off drop-offs in aggregations · 5–35 m
2 stars of 5, usually seen in a week in Maldives
Brown-marbled grouper Epinephelus fuscoguttatus
Reef slopes, walls and wrecks · 4–60 m
2 stars of 5, usually seen in a week in Bali
Bubble coral shrimp Palaemonella philippinensis
Bubble coral · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Bumphead damselfish Microspathodon bairdii
Shallow rock in surge · 1–15 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Bumphead parrotfish Bolbometopon muricatum
Reef slopes, lagoons and drop-offs · 3–30 m
2 stars of 5, usually seen in a week in Papua New Guinea
Butter hamlet Hypoplectrus unicolor
Reef · 3–25 m
2 stars of 5, usually seen in a week in Bahamas
Candy crab Hoplophrys oatesii
Dendronephthya soft coral · 8–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Caribbean reef squid Sepioteuthis sepioidea
Above shallow reef · 1–20 m
2 stars of 5, usually seen in a week in Bahamas
Caribbean spiny lobster Panulirus argus
Crevices, ledges and wrecks · 1–30 m
2 stars of 5, usually seen in a week in Florida
Celestial phyllidia Phyllidia coelestis
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Cheeklined wrasse Oxycheilinus digramma
Coral reef, rubble and reef slopes · 3–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Chelidonura Chelidonura varians
Sand, rubble and algae film · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Chevron butterflyfish Chaetodon trifascialis
On tabular Acropora · 2–20 m
2 stars of 5, usually seen in a week in Maldives
Clarion soldierfish Myripristis clarionensis
Caves and overhangs · 5–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Co's goniobranchus Goniobranchus coi
Sponge on rubble and reef edges · 5–30 m
2 stars of 5, usually seen in a week in Anilao
Common remora Remora remora
Attached to large animals in open water · 5–40 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Common seahorse Hippocampus kuda
Seagrass and rubble · 1–20 m
2 stars of 5, usually seen in a week in Dauin & Dumaguete
Common spider conch Lambis lambis
Sand, rubble and seagrass · 0–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Common stingaree Trygonoptera testacea
Sand beside temperate reef, east coast · 1–30 m
2 stars of 5, usually seen in a week in Australia Needs treatment Cone shell Conus
Sand, rubble and silt · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Medical emergency Coral guard crab Trapezia rufopunctata
Branching corals on reef · 2–25 m
2 stars of 5, usually seen in a week in Papua New Guinea
Corkscrew anemone Bartholomea annulata
Holes in rubble and reef · 1–25 m
2 stars of 5, usually seen in a week in Florida Caution Cortez chub Kyphosus elegans
Shallow rock in surge · 1–20 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Crested nembrotha Nembrotha cristata
Sea squirts on rubble and rock · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Crimson-banded wrasse Notolabrus gymnogenis
Temperate rocky reef, New South Wales · 3–30 m
2 stars of 5, usually seen in a week in Australia
Crocodile needlefish Tylosurus crocodilus
Surface water over reef and sand · 0–5 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Crosshatch triggerfish Xanthichthys mento
Open water above rock and walls · 10–40 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Crown butterflyfish Chaetodon paucifasciatus
Coral-rich reef · 3–30 m
2 stars of 5, usually seen in a week in Red Sea
Cup coral phestilla Phestilla melanobrachia
Cup coral on pilings and wreckage · 3–30 m
2 stars of 5, usually seen in a week in Ambon
Day octopus Octopus cyanea
Rubble, reef edges and rock · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Decorator crab Camposcia retusa
Rubble, sponge and debris · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Diamond stingray Hypanus dipterurus
Buried on sand in sheltered bays · 1–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Diana's chromodoris Chromodoris dianae
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Doctorfish Acanthurus chirurgus
Reef and rubble · 1–25 m
2 stars of 5, usually seen in a week in Florida
Dogtooth tuna Gymnosarda unicolor
Channel mouths and outer reef · 5–40 m
2 stars of 5, usually seen in a week in Maldives
Dot-and-dash butterflyfish Chaetodon pelewensis
Coral reef and outer slopes · 3–30 m
2 stars of 5, usually seen in a week in Papua New Guinea
Dotted nudibranch Jorunna funebris
Blue sponge on rubble · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Dusky butterflyfish Chaetodon flavirostris
Subtropical rocky and coral reef, east coast · 3–25 m
2 stars of 5, usually seen in a week in Australia
Dusky damselfish Stegastes adustus
Shallow rock and rubble · 0–10 m
2 stars of 5, usually seen in a week in Florida
Dwarf flounder Engyprosopon
Open sand and fine rubble · 5–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Dwarf hawkfish Cirrhitichthys falco
Coral heads and rubble · 5–45 m
2 stars of 5, usually seen in a week in Lembeh Strait
Dwarf lionfish Dendrochirus brachypterus
Weed and rubble on sand · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Eastern fortescue Centropogon australis
Estuary sand, weed and rubble, east coast · 0–20 m
2 stars of 5, usually seen in a week in Australia Needs treatment Eastern Pacific eagle ray Aetobatus laticeps
Sand flats and bay mouths · 2–30 m
2 stars of 5, usually seen in a week in Galapagos Islands
Egg cowrie Ovula ovum
Leather and soft coral · 2–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Electra chelidonura Chelidonura electra
Sand, rubble and algae film · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Elegant phyllidia Phyllidia elegans
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Elisabeth's chromodoris Chromodoris elisabethina
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Elkhorn coral Acropora palmata
Shallow reef crest · 1–10 m
2 stars of 5, usually seen in a week in Bahamas
Ember parrotfish Scarus rubroviolaceus
Grazing reef · 3–30 m
2 stars of 5, usually seen in a week in Maldives
Emerald wrasse Thalassoma virens
Shallow rock in the surge zone · 0–10 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Emma's hypselodoris Hypselodoris emma
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Evans' anthias Mirolabrichthys evansi
Midwater off drop-offs · 10–40 m
2 stars of 5, usually seen in a week in Maldives
Fine-spotted moray Gymnothorax dovii
Rocky reef · 3–30 m
2 stars of 5, usually seen in a week in Galapagos Islands
Finescale triggerfish Balistes polylepis
Rock and sand margins · 5–40 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Fingered dragonet Dactylopus dactylopus
Open sand · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Fingerprint toby Canthigaster compressa
Silty sand and rubble · 2–25 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Flamefish Apogon maculatus
Under ledges, in holes and wrecks · 1–30 m
2 stars of 5, usually seen in a week in Florida
Flower moon crab Matuta victor
Shallow open sand · 1–12 m
2 stars of 5, usually seen in a week in Lembeh Strait
Fourline wrasse Labroides quadrilineatus
Coral heads · 3–30 m
2 stars of 5, usually seen in a week in Red Sea
Freckled goatfish Upeneus tragula
Silty sand and seagrass · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Galapagos barnacle blenny Acanthemblemaria castroi
Barnacle shells and worm tubes · 2–20 m
2 stars of 5, usually seen in a week in Galapagos Islands
Galapagos gorgonian Muricea sp.
Current-exposed walls · 10–40 m
2 stars of 5, usually seen in a week in Galapagos Islands
Galapagos shark Carcharhinus galapagensis
Exposed rocky points and drop-offs · 5–40 m
2 stars of 5, usually seen in a week in Galapagos Islands
Gammarid amphipod Amphipoda
Weed, hydroids, sediment and structure · 0–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Geometric goniobranchus Goniobranchus geometricus
Sponge on rubble and rock · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Giant Australian cuttlefish Ascarosepion apama
Temperate rocky reef; the Whyalla breeding aggregation, May to August · 1–20 m
2 stars of 5, usually seen in a week in Australia
Giant basket star Astrophyton muricatum
On gorgonians, open at night · 5–30 m
2 stars of 5, usually seen in a week in Cayman Islands
Giant hawkfish Cirrhitus rivulatus
Perched in boulder crevices · 3–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Girdled glossodoris Glossodoris cincta
Sponge on rubble and rock · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Glassy sweeper Pempheris schomburgkii
Caves and wrecks · 3–30 m
2 stars of 5, usually seen in a week in Florida
Gloomy octopus Octopus tetricus
Rocky reef and rubble, east coast · 1–25 m
2 stars of 5, usually seen in a week in Australia
Gold-specs jawfish Opistognathus randalli
Coarse sand and rubble · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Golden crinoid Davidaster rubiginosus
Crevices on the wall · 5–30 m
2 stars of 5, usually seen in a week in Bahamas
Golden damsel Amblyglyphidodon aureus
Sea fans and black coral on slopes · 10–45 m
2 stars of 5, usually seen in a week in Lembeh Strait
Golden rabbitfish Siganus guttatus
Silty reef, rubble and jetty pilings · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Golden trevally Gnathanodon speciosus
Sand, rubble and open water over reef · 2–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Goldentail moray Gymnothorax miliaris
Reef and coral heads · 1–30 m
2 stars of 5, usually seen in a week in Bahamas
Goldspot goby Gnatholepis thompsoni
Open sand · 1–25 m
2 stars of 5, usually seen in a week in Bahamas
Goliath grouper Epinephelus itajara
Wrecks and ledges; the spawning aggregation, August to October · 15–35 m
2 stars of 5, usually seen in a week in Florida
Graceful anemone shrimp Periclimenes venustus
Carpet anemones on sand and silt · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Gracile thuridilla Thuridilla gracilis
Algae on rubble in the shallows · 0–15 m
2 stars of 5, usually seen in a week in Lembeh Strait
Graysby Cephalopholis cruentata
Reef and rubble, under ledges · 3–30 m
2 stars of 5, usually seen in a week in Florida
Great hammerhead Sphyrna mokarran
Shallow sand off Bimini, winter · 5–20 m
2 stars of 5, usually seen in a week in Bahamas
Green barrel ascidian Didemnum molle
Rubble and dead coral · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Green jack Caranx caballus
Schooling in midwater · 2–30 m
2 stars of 5, usually seen in a week in Galapagos Islands
Green jobfish Aprion virescens
Open water over reef and channels · 5–40 m
2 stars of 5, usually seen in a week in Maldives
Green moray Gymnothorax funebris
Reef, wrecks and ledges · 1–30 m
2 stars of 5, usually seen in a week in Florida Needs treatment Green-spotted hypselodoris Hypselodoris infucata
Sponge on silt and rubble · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Grey angelfish Pomacanthus arcuatus
Reef and wrecks · 3–30 m
2 stars of 5, usually seen in a week in Florida
Grey nurse shark Carcharias taurus
East coast rocky gutters and caves, New South Wales · 10–30 m
2 stars of 5, usually seen in a week in Australia
Grey reef shark Carcharhinus amblyrhynchos
Reef edges and channels, Coral Sea · 5–40 m
2 stars of 5, usually seen in a week in Australia Needs treatment Hairy red hermit crab Dardanus lagopodes
Sand, silt and rubble · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Halfmoon triggerfish Sufflamen chrysopterum
Rubble and reef · 3–30 m
2 stars of 5, usually seen in a week in Maldives
Halloween hermit crab Ciliopagurus strigatus
Rubble and coarse sand · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Haminoea Haminoea
Shallow silt, weed and seagrass · 0–12 m
2 stars of 5, usually seen in a week in Lembeh Strait
Harlequin bass Serranus tigrinus
Rubble and reef base · 3–25 m
2 stars of 5, usually seen in a week in Bahamas
Harlequin wrasse Bodianus eclancheri
Rocky reef; colour extremely variable · 5–30 m
2 stars of 5, usually seen in a week in Galapagos Islands
Harry hotlips Plectorhinchus gibbosus
Jetty pilings, wrecks and silty reef · 2–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Hawksbill turtle Eretmochelys imbricata
Reef slopes and walls · 1–40 m
2 stars of 5, usually seen in a week in Bali
Herring cale Olisthops cyanomelas
Kelp and brown algae, temperate south · 2–25 m
2 stars of 5, usually seen in a week in Australia
Hingebeak shrimp Rhynchocinetes durbanensis
Overhangs, caves and wrecks · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Hogfish Lachnolaimus maximus
Sand and reef edges · 3–30 m
2 stars of 5, usually seen in a week in Florida
Holthuis' anemone shrimp Ancylomenes holthuisi
Anemones and mushroom corals · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Honeycomb moray Gymnothorax favagineus
Coral heads, crevices and wrecks · 3–40 m
2 stars of 5, usually seen in a week in Bali Needs treatment Horse-eye jack Caranx latus
Mid-water over reef and wrecks · 3–35 m
2 stars of 5, usually seen in a week in Florida
Humpback turretfish Tetrasomus gibbosus
Sand, silt and seagrass · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Humphead wrasse Cheilinus undulatus
Reef slopes, walls and drop-offs · 3–60 m
2 stars of 5, usually seen in a week in Papua New Guinea
Hyperiid amphipod Hyperiidea
Blackwater, open water at night · 0–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Indian mackerel Rastrelliger kanagurta
Open water over reef and sand · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Jewel moray Muraena lentiginosa
Rubble and small crevices · 2–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Jewelled blenny Salarias fasciatus
Rubble and dead coral in the shallows · 1–12 m
2 stars of 5, usually seen in a week in Lembeh Strait
Larval jack Carangidae
Blackwater, open water at night · 0–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Leaf scorpionfish Taenianotus triacanthus
Rubble and coral · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Leather bass Dermatolepis dermatolepis
Rocky reef, often shadowing other fish · 5–35 m
2 stars of 5, usually seen in a week in Galapagos Islands
Lemon shark Negaprion brevirostris
Shallow sand and mangrove edges · 2–15 m
2 stars of 5, usually seen in a week in Bahamas
Lemonpeel angelfish Centropyge flavissima
Coral reef and shallow slopes · 3–25 m
2 stars of 5, usually seen in a week in Papua New Guinea
Lined nembrotha Nembrotha lineolata
Sea squirts on rubble and rock · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Lined phyllidiella Phyllidiella zeylanica
Sponge-covered rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Lined sea hare Stylocheilus striatus
Cyanobacteria mat on silt · 0–10 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Live sharksucker Echeneis naucrates
Attached to large animals over reef and sand · 1–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Lobe coral Porites lobata
Sheltered rock in the lee of the islands · 3–25 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Lobed ceratosoma Ceratosoma trilobatum
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Loch's chromodoris Chromodoris lochi
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Longhorn cowfish Lactoria cornuta
Sand, silt and seagrass · 1–40 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Longnose hawkfish Oxycirrhites typus
Gorgonians and black coral on walls and slopes · 15–60 m
2 stars of 5, usually seen in a week in Bali
Longspine squirrelfish Holocentrus rufus
Under ledges and in caves · 3–30 m
2 stars of 5, usually seen in a week in Florida
Luderick Girella tricuspidata
Estuaries and shallow rocky shore, east and south coasts · 0–20 m
2 stars of 5, usually seen in a week in Australia
Magnificent chromodoris Chromodoris magnifica
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Mahogany snapper Lutjanus mahogoni
Reef · 3–30 m
2 stars of 5, usually seen in a week in Bahamas
Map puffer Arothron mappa
Coral reef, rubble and reef slopes · 3–35 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Marine iguana Amblyrhynchus cristatus
Shallow rocky shore, grazing algae · 0–12 m
2 stars of 5, usually seen in a week in Galapagos Islands
Maritime hypselodoris Hypselodoris maritima
Sponge on rubble and rock · 5–25 m
2 stars of 5, usually seen in a week in Anilao
Masked goby Coryphopterus personatus
Caves and under ledges · 3–30 m
2 stars of 5, usually seen in a week in Bahamas
Merten's carpet anemone Stichodactyla mertensii
Coral heads, rock and reef slopes · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Messmate pipefish Corythoichthys haematopterus
Sand, rubble and reef edges · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Mexican goatfish Mulloidichthys dentatus
Sand margins and rock ledges · 3–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Meyer's butterflyfish Chaetodon meyeri
Living coral on reef slopes · 3–30 m
2 stars of 5, usually seen in a week in Papua New Guinea
Midas blenny Ecsenius midas
Reef slopes, walls and rubble · 3–40 m
2 stars of 5, usually seen in a week in Bali
Midnight snapper Macolor macularis
Around coral heads and channel walls · 5–40 m
2 stars of 5, usually seen in a week in Maldives
Mimic filefish Paraluteres prionurus
Coral reef, rubble and reef slopes · 2–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Mimic surgeonfish Acanthurus pyroferus
Coral reef, rubble and reef slopes · 3–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Mosaic crab Zosimus aeneus
Rubble and dead coral · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait Medical emergency Mud reef goby Exyrias belissimus
Silty sand and rubble · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Multipore sea star Linckia multifora
Rubble and rock · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Mushroom anemone Corallimorpharia
Dead coral, rubble and debris · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Nassau grouper Epinephelus striatus
Reef and wall; winter spawning aggregations · 5–30 m
2 stars of 5, usually seen in a week in Bahamas
Necklace sea star Fromia monilis
Rubble and reef slopes · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Neon goby Elacatinus oceanops
Cleaning stations on coral heads · 2–25 m
2 stars of 5, usually seen in a week in Florida
Neon nembrotha Nembrotha kubaryana
Sea squirts on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Nimble spray crab Percnon planissimum
Shallow rubble and rock · 0–15 m
2 stars of 5, usually seen in a week in Lembeh Strait
Ocellate phyllidia Phyllidia ocellata
Sponge on rubble and rock · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Ocellate sapsucker Plakobranchus ocellatus
Sand and seagrass · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Ocellate sea star Nectria ocellata
Temperate rocky reef, south coast · 3–30 m
2 stars of 5, usually seen in a week in Australia
Old wife Enoplosus armatus
Jetties, ledges and weed, temperate south · 1–30 m
2 stars of 5, usually seen in a week in Australia Caution Olive sea snake Aipysurus laevis
Coral reef and rubble, Great Barrier Reef and Coral Sea · 3–40 m
2 stars of 5, usually seen in a week in Australia Medical emergency Olive snail Oliva
Open sand and silt · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Orange clownfish Amphiprion percula
Host anemones on northern Great Barrier Reef · 1–15 m
2 stars of 5, usually seen in a week in Australia
Orange dendrodoris Dendrodoris fumata
Sponge on rubble and rock · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Orange-dashed goby Valenciennea puellaris
Open sand and rubble · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Orangeband surgeonfish Acanthurus olivaceus
Sand, rubble and reef slopes · 3–45 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Orangeside triggerfish Sufflamen verres
Rock and rubble · 3–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Orbicular batfish Platax orbicularis
Wrecks, jetty structure and reef slopes · 2–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Oriental sweetlips Plectorhinchus vittatus
Coral heads, overhangs and wrecks · 3–35 m
2 stars of 5, usually seen in a week in Bali
Ornate butterflyfish Chaetodon ornatissimus
Living coral on reef slopes · 3–35 m
2 stars of 5, usually seen in a week in Papua New Guinea
Ornate elysia Elysia ornata
Green algae in the shallows · 0–15 m
2 stars of 5, usually seen in a week in Lembeh Strait
Ovulid snail Ovulidae
Rubble and reef slopes · 5–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Pacific dog snapper Lutjanus novemfasciatus
Rocky reef and boulder fields · 5–30 m
2 stars of 5, usually seen in a week in Galapagos Islands
Pacific spiny lobster Panulirus penicillatus
Crevices, antennae showing · 2–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Painted frogfish Antennarius pictus
Sponge and rubble · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Painted sweetlips Diagramma pictum
Sand, rubble and reef edges · 3–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Panama graysby Cephalopholis panamensis
Rock ledges and crevice mouths · 5–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Panamic cushion star Pentaceraster cumingi
Sand and rubble · 3–30 m
2 stars of 5, usually seen in a week in Galapagos Islands
Panamic porkfish Anisotremus taeniatus
Rocky reef; juveniles clean · 3–25 m
2 stars of 5, usually seen in a week in Galapagos Islands
Papuan cuttlefish Ascarosepion papuense
Sand and rubble · 2–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Peacock flounder Bothus mancus
Sand and rubble · 1–80 m
2 stars of 5, usually seen in a week in Lembeh Strait
Pederson cleaner shrimp Ancylomenes pedersoni
In corkscrew anemones · 1–25 m
2 stars of 5, usually seen in a week in Bahamas
Pen shell Pinna
Sand and silt · 3–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Persian carpet flatworm Pseudobiceros bedfordi
Rubble, sponge and rock · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Pink-speckled shrimpgoby Cryptocentrus leptocephalus
Silty sand and mud · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Plain cardinalfish Apogon atricaudus
Under ledges and in caves · 5–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Porkfish Anisotremus virginicus
Reef and ledges · 2–25 m
2 stars of 5, usually seen in a week in Florida
Port Jackson shark Heterodontus portusjacksoni
Temperate rocky reef and under ledges · 3–30 m
2 stars of 5, usually seen in a week in Australia
Pseudoceros flatworm Pseudoceros
Rubble and coral reef · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Pygmy sweeper Parapriacanthus ransonneti
Caves, overhangs and wrecks · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Pyjama nudibranch Chromodoris quadricolor
On red sponge, its food and its match · 3–30 m
2 stars of 5, usually seen in a week in Red Sea
Pyramid butterflyfish Hemitaurichthys polylepis
Open water over drop-offs and steep slopes · 5–50 m
2 stars of 5, usually seen in a week in Papua New Guinea
Pyramid sea star Pharia pyramidata
Rock and rubble · 3–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Queen angelfish Holacanthus ciliaris
Reef and wrecks · 3–30 m
2 stars of 5, usually seen in a week in Florida
Queen conch Aliger gigas
Seagrass and sand flats · 1–20 m
2 stars of 5, usually seen in a week in Bahamas
Queen triggerfish Balistes vetula
Reef and rubble · 3–30 m
2 stars of 5, usually seen in a week in Bahamas
Ragged sea hare Bursatella leachii
Silt and weed · 0–12 m
2 stars of 5, usually seen in a week in Lembeh Strait
Raggy scorpionfish Scorpaenopsis venosa
Rubble and sponge on slopes · 3–40 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Rainbow runner Elagatis bipinnulata
Open water · 0–40 m
2 stars of 5, usually seen in a week in Maldives
Red bait crab Guinusia chabrus
Surge zone on temperate rock · 0–15 m
2 stars of 5, usually seen in a week in Australia
Red fire urchin Astropyga radiata
Sand and rubble · 5–40 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Red hind Epinephelus guttatus
Reef and wall · 5–30 m
2 stars of 5, usually seen in a week in Bahamas
Red Sea crocodilefish Papilloculiceps longiceps
Flat on sand, rubble and coral · 3–30 m
2 stars of 5, usually seen in a week in Red Sea
Red Sea garden eel Gorgasia sillneri
Sand slopes in dense colonies · 10–35 m
2 stars of 5, usually seen in a week in Red Sea
Red spider crab Schizophrys aspera
Rubble, ledges and debris · 1–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Red-lined flabellina Coryphellina rubrolineata
Hydroids on rubble and wrecks · 3–25 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Red-margined glossodoris Glossodoris rufomarginata
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Redfin fairy wrasse Cirrhilabrus solorensis
Rubble slopes and coral heads · 5–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Redlip blenny Ophioblennius macclurei
Shallow rock and coral · 0–15 m
2 stars of 5, usually seen in a week in Florida
Redmouth grouper Aethaloperca rogaa
Caves, overhangs and wrecks · 3–40 m
2 stars of 5, usually seen in a week in Red Sea
Reef manta Mobula alfredi
Cleaning stations at Ningaloo and on the Great Barrier Reef · 3–25 m
2 stars of 5, usually seen in a week in Australia
Ringed wrasse Hologymnosus annulatus
Coral reef, rubble and sand patches · 6–40 m
2 stars of 5, usually seen in a week in Papua New Guinea
Rock beauty Holacanthus tricolor
Reef and rocky ground · 3–30 m
2 stars of 5, usually seen in a week in Florida
Rockmover wrasse Novaculichthys taeniourus
Rock and rubble · 3–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Roving coralgrouper Plectropomus pessuliferus
Reef slopes and drop-offs · 5–40 m
2 stars of 5, usually seen in a week in Red Sea
Rubble porcelain crab Petrolisthes
Under rubble and loose rock · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sabertooth blenny Plagiotremus azaleus
Rock, retreating into holes · 1–25 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Sabre squirrelfish Sargocentron spiniferum
Overhangs, caves and reef slopes · 3–40 m
2 stars of 5, usually seen in a week in Bali Caution Saddled blenny Malacoctenus triangulatus
Rubble and coral · 1–20 m
2 stars of 5, usually seen in a week in Bahamas
Sailfin grouper Mycteroperca olfax
Rocky reef and drop-offs · 5–40 m
2 stars of 5, usually seen in a week in Galapagos Islands
Sand diver Synodus intermedius
Sand and rubble · 1–30 m
2 stars of 5, usually seen in a week in Florida
Sand star Astropecten
Open sand · 3–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sand tilefish Malacanthus plumieri
Open sand with rubble mounds · 5–30 m
2 stars of 5, usually seen in a week in Florida
Scarlet cleaner shrimp Lysmata grabhami
Cleaning stations in holes and under ledges · 3–30 m
2 stars of 5, usually seen in a week in Cayman Islands
Schooling bannerfish Heniochus diphreutes
Open water over slopes and drop-offs · 5–45 m
2 stars of 5, usually seen in a week in Bali
Schultz's pipefish Corythoichthys schultzi
Rubble and sand · 2–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Scribbled filefish Aluterus scriptus
Reef slopes, rubble and open water · 2–45 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sea cucumber crab Lissocarcinus orbicularis
Sea cucumbers on sand · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sea fan brittle star Ophiothela
Gorgonians, whip corals and sponges · 5–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sea pen porcelain crab Porcellanella triloba
Sea pens on sand and silt · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sea star shrimp Zenopontonia soror
On sea stars · 2–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Semicircle angelfish Pomacanthus semicirculatus
Coral heads, rubble and reef slopes · 3–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sentinel crab Macrophthalmus
Shallow silt and mud near the shore · 0–8 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sergeant baker Latropiscis purpurissatus
Temperate rocky reef and sand patches · 5–40 m
2 stars of 5, usually seen in a week in Australia
Sexy shrimp Thor amboinensis
Small anemones and corallimorphs · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sharknose goby Elacatinus evelynae
Cleaning stations on coral heads · 2–30 m
2 stars of 5, usually seen in a week in Bahamas
Sharpnose sandperch Parapercis cylindrica
Shallow sand, rubble and weed · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Short-tailed ceratosoma Ceratosoma brevicaudatum
Sponge on temperate rocky reef · 3–30 m
2 stars of 5, usually seen in a week in Australia
Silky shark Carcharhinus falciformis
Open water, often under the boat · 0–25 m
2 stars of 5, usually seen in a week in Cocos Island
Silver trevally Pseudocaranx georgianus
Mid-water over temperate reef and around jetties · 1–40 m
2 stars of 5, usually seen in a week in Australia
Silverstripe chromis Chromis alta
Deeper rock and ledges · 15–40 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Silvertip shark Carcharhinus albimarginatus
Open water and seamount edges · 10–40 m
2 stars of 5, usually seen in a week in Cocos Island
Six-spine leatherjacket Meuschenia freycineti
Weed, jetties and rocky reef, temperate south · 1–30 m
2 stars of 5, usually seen in a week in Australia
Sixline wrasse Pseudocheilinus hexataenia
Branching coral and rubble · 3–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sixspot goby Valenciennea sexguttata
Shallow silty sand and rubble · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sleek unicornfish Naso hexacanthus
Midwater off drop-offs in aggregations · 5–40 m
2 stars of 5, usually seen in a week in Red Sea
Slender ceratosoma Ceratosoma tenue
Sponge on rubble and rock · 5–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Slender lizardfish Saurida gracilis
Open sand and rubble · 2–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Slingjaw wrasse Epibulus insidiator
Coral reef, rubble and reef slopes · 2–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Smashing mantis shrimp Gonodactylaceus falcatus
Rubble, dead coral and debris · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Smooth trunkfish Lactophrys triqueter
Reef and sand · 2–30 m
2 stars of 5, usually seen in a week in Florida
Snakefish Trachinocephalus trachinus
Open sand and fine rubble · 3–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Snowflake moray Echidna nebulosa
Shallow rubble and rock · 0–30 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Soft coral porcelain crab Lissoporcellana nakasonei
Dendronephthya and other soft corals · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Spengler's triton Cabestana spengleri
Temperate rocky reef and jetty pylons · 0–25 m
2 stars of 5, usually seen in a week in Australia
Spinecheek goby Oplopomus oplopomus
Open sand and silt · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Spinster wrasse Halichoeres nicholsi
Rock and sand margins · 3–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Spiny devilfish Inimicus didactylus
Black sand and silt · 1–40 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Splendid goniobranchus Goniobranchus splendidus
Sponge on temperate rocky reef, east coast · 2–25 m
2 stars of 5, usually seen in a week in Australia
Splitlevel hogfish Bodianus mesothorax
Coral reef, rubble and reef slopes · 5–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Sponge brittle star Ophiothrix suensonii
In sponges and gorgonians · 3–30 m
2 stars of 5, usually seen in a week in Florida
Sponge-dwelling synaptid Synaptula lamperti
Sponge on rubble and rock · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Spotfin lionfish Pterois antennata
Rubble, ledges and jetty pilings · 1–50 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Spotfin porcupinefish Diodon hystrix
Under ledges and in caves by day · 3–30 m
2 stars of 5, usually seen in a week in Red Sea
Spotted box crab Calappa philargius
Open sand and silt · 5–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Spotted cleaner shrimp Periclimenes yucatanicus
In anemones on reef · 3–25 m
2 stars of 5, usually seen in a week in Cayman Islands
Spotted drum Equetus punctatus
Under ledges and in small caves · 3–30 m
2 stars of 5, usually seen in a week in Cayman Islands
Spotted garden eel Heteroconger hassi
Open sand slopes with current · 10–45 m
2 stars of 5, usually seen in a week in Lembeh Strait
Spotted sand-diver Trichonotus setiger
Clean fine sand, often in current · 8–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Spotted sharpnose puffer Canthigaster punctatissima
Rock and rubble · 3–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Spotted shrimpgoby Amblyeleotris guttata
Clean sand and rubble near reef · 8–35 m
2 stars of 5, usually seen in a week in Lembeh Strait
Spotted unicornfish Naso brevirostris
Midwater off drop-offs · 5–40 m
2 stars of 5, usually seen in a week in Maldives
Spotted wobbegong Orectolobus maculatus
Rocky reef, ledges and jetty pylons · 1–30 m
2 stars of 5, usually seen in a week in Australia Needs treatment Starry puffer Arothron stellatus
Reef slopes and sand · 3–50 m
2 stars of 5, usually seen in a week in Bali Caution Steephead parrotfish Chlorurus microrhinos
Coral reef and slopes · 3–35 m
2 stars of 5, usually seen in a week in Papua New Guinea
Steinitz's shrimpgoby Amblyeleotris steinitzi
Sand and rubble near reef · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Stone scorpionfish Scorpaena mystes
Rock and rubble, motionless · 2–30 m
2 stars of 5, usually seen in a week in Galapagos Islands Needs treatment Stove-pipe sponge Aplysina archeri
Wall · 10–35 m
2 stars of 5, usually seen in a week in Bahamas
Striped barracuda Sphyraena obtusata
Mid-water over reef, east and south coasts · 1–30 m
2 stars of 5, usually seen in a week in Australia
Striped chromodoris Chromodoris strigata
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Stumpy-spined cuttlefish Ascarosepion bandense
Rubble and debris · 3–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Summana grouper Epinephelus summana
Sheltered reef and lagoon · 2–30 m
2 stars of 5, usually seen in a week in Red Sea
Sunset wrasse Thalassoma grammaticum
Rock and boulder ground · 3–25 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Swallow damsel Azurina hirundo
Open water just above rock · 5–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Sydney cardinalfish Ostorhinchus limenus
Ledges and jetty pylons, east coast estuaries · 1–25 m
2 stars of 5, usually seen in a week in Australia
Tasselled scorpionfish Scorpaenopsis oxycephala
Rock, rubble and sponge · 1–40 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Tawny nurse shark Nebrius ferrugineus
Resting under ledges by day · 3–30 m
2 stars of 5, usually seen in a week in Maldives
Thalamita swimming crab Thalamita
Rubble, rock and sand · 1–25 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Three-rowed sea cucumber Isostichopus badionotus
Sand and rubble · 1–25 m
2 stars of 5, usually seen in a week in Florida
Threebanded butterflyfish Chaetodon humeralis
Rock and rubble · 3–25 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Tiger cowrie Cypraea tigris
Coral reef and rubble · 2–30 m
2 stars of 5, usually seen in a week in Papua New Guinea
Tiger grouper Mycteroperca tigris
Reef and wall, at cleaning stations · 10–35 m
2 stars of 5, usually seen in a week in Bahamas
Titan triggerfish Balistoides viridescens
Rubble and reef edges · 1–40 m
2 stars of 5, usually seen in a week in Lembeh Strait Needs treatment Tosa commensal shrimp Periclimenes tosaensis
Large host anemones and bubble coral · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Tryon's hypselodoris Hypselodoris tryoni
Sponge on rubble and silt · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Two-spined angelfish Centropyge bispinosa
Reef slopes and walls · 8–60 m
2 stars of 5, usually seen in a week in Bali
Two-spot cleaner shrimp Urocaridella antonbruunii
Overhangs, holes and debris · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Twospot red snapper Lutjanus bohar
Reef slopes and drop-offs · 3–50 m
2 stars of 5, usually seen in a week in Papua New Guinea Needs treatment Undulated moray Gymnothorax undulatus
Reef and rubble, also hunting by day · 2–30 m
2 stars of 5, usually seen in a week in Maldives
Upside-down jellyfish Cassiopea andromeda
Sheltered sand and mangrove edges · 0–10 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Urchin carrier crab Dorippe
Open sand and silt · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Variegated urchin Lytechinus variegatus
Seagrass beds and sand · 0–20 m
2 stars of 5, usually seen in a week in Florida
Velvet sea star Petricia vernicina
Under ledges on temperate rocky reef · 1–30 m
2 stars of 5, usually seen in a week in Australia
Violet hypselodoris Hypselodoris apolegma
Sponge on rubble and rock · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Warty frogfish Antennarius maculatus
Rubble and sponge · 3–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Warty sea cucumber Stichopus horrens
Rubble and sand · 1–20 m
2 stars of 5, usually seen in a week in Lembeh Strait
Weedy seadragon Phyllopteryx taeniolatus
Kelp and rocky reef across the temperate south · 3–30 m
2 stars of 5, usually seen in a week in Australia
Whale shark Rhincodon typus
Ningaloo Reef, Western Australia, March to July · 0–20 m
2 stars of 5, usually seen in a week in Australia
Wheeler's shrimpgoby Amblyeleotris wheeleri
Sand and rubble near reef · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
White sea urchin Tripneustes depressus
Rock and rubble · 1–25 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Whitespotted eagle ray Aetobatus narinari
Sand flats and the reef edge · 3–30 m
2 stars of 5, usually seen in a week in Bahamas Needs treatment Whitetail damselfish Stegastes leucorus
Shallow rock and boulder ground · 1–25 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Willan's chromodoris Chromodoris willani
Sponge on rubble and rock · 3–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Xenia swimming crab Caphyra rotundifrons
Xenia soft coral on silty reef and rubble · 2–25 m
2 stars of 5, usually seen in a week in Lembeh Strait
Yellow angelfish Centropyge heraldi
Coral reef and rubble on slopes · 5–40 m
2 stars of 5, usually seen in a week in Bali
Yellow boxfish Ostracion cubicus
Rubble, reef edges and jetties · 1–40 m
2 stars of 5, usually seen in a week in Lembeh Strait Caution Yellow sea cucumber Colochirus robustus
Sponge, rubble and structure · 5–30 m
2 stars of 5, usually seen in a week in Lembeh Strait
Yellow snapper Lutjanus argentiventris
Under overhangs and around boulder ground · 5–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Yellow stingray Urobatis jamaicensis
Shallow sand and rubble; common at Blue Heron Bridge · 1–20 m
2 stars of 5, usually seen in a week in Florida Needs treatment Yellow-edged moray Gymnothorax flavimarginatus
Reef crevices · 3–30 m
2 stars of 5, usually seen in a week in Maldives
Yellowbanded sweetlips Plectorhinchus lineatus
Coral heads, overhangs and reef slopes · 3–35 m
2 stars of 5, usually seen in a week in Papua New Guinea
Yellowbar angelfish Pomacanthus maculosus
Reef slopes and wrecks · 3–30 m
2 stars of 5, usually seen in a week in Red Sea
Yellowedge lyretail Variola louti
Reef slopes and drop-offs · 5–40 m
2 stars of 5, usually seen in a week in Red Sea Caution Yellowhead jawfish Opistognathus aurifrons
Rubble-lined burrows on sand · 5–30 m
2 stars of 5, usually seen in a week in Bahamas
Yellowline arrow crab Stenorhynchus seticornis
Sponge, ledges and anemones · 1–30 m
2 stars of 5, usually seen in a week in Florida
Yellowmargin triggerfish Pseudobalistes flavimarginatus
Sand and reef · 3–40 m
2 stars of 5, usually seen in a week in Maldives Caution Yellowmask angelfish Pomacanthus xanthometopon
Reef slopes and overhangs · 5–30 m
2 stars of 5, usually seen in a week in Maldives
Yellowsaddle goatfish Parupeneus cyclostomus
Coral reef, rubble and sand · 2–40 m
2 stars of 5, usually seen in a week in Lembeh Strait
Yellowtail kingfish Seriola lalandi
Open water above rock and walls · 5–40 m
2 stars of 5, usually seen in a week in Islas Revillagigedo
Yellowtail tang Zebrasoma xanthurum
Coral-rich reef · 2–25 m
2 stars of 5, usually seen in a week in Red Sea
Zebra crab Zebrida adamsii
On sea urchins · 3–25 m
2 stars of 5, usually seen in a week in Anilao
Zebra dartfish Ptereleotris zebra
Reef edge with current · 2–25 m
2 stars of 5, usually seen in a week in Bali
Zebra moray Gymnomuraena zebra
Rock crevices · 3–30 m
2 stars of 5, usually seen in a week in Islas Revillagigedo Caution Agassiz's nudibranch Felimare agassizii
Rocky reef and sponge · 3–30 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Alciopid worm Alciopinae
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Anilao
Alligator pipefish Syngnathoides biaculeatus
Seagrass and weedy shallows · 1–15 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Aplysia Aplysia
Weed and rubble in the shallows · 0–15 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Armina Armina semperi
Silt and fine sand · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Arrow worm Chaetognatha
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Atlantic bigeye Priacanthus arenatus
Under ledges and on wrecks · 5–35 m
3 stars of 5, a good week should turn one up in Florida
Atlantic cornetfish Fistularia tabacaria
Sand, seagrass and reef edges · 1–25 m
3 stars of 5, a good week should turn one up in Florida
Atlantic flying gurnard Dactylopterus volitans
Sand and rubble; Blue Heron Bridge · 1–25 m
3 stars of 5, a good week should turn one up in Florida
Atlantic nimble spray crab Percnon gibbesi
Shallow rock, often under urchins · 0–15 m
3 stars of 5, a good week should turn one up in Florida
Banded jawfish Opistognathus macrognathus
Sand and rubble burrows; Blue Heron Bridge · 1–20 m
3 stars of 5, a good week should turn one up in Florida
Banded wrasse Halichoeres notospilus
Rock and rubble · 1–10 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Bandtail scorpionfish Scorpaenopsis neglecta
Sand, rubble and low weed · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Barbfish Scorpaena brasiliensis
Sand and rubble; Blue Heron Bridge · 1–25 m
3 stars of 5, a good week should turn one up in Florida Needs treatment Barbour's seahorse Hippocampus barbouri
Seagrass and sand · 1–12 m
3 stars of 5, a good week should turn one up in Dauin & Dumaguete
Barred filefish Cantherhines dumerilii
Rock and boulder ground · 3–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Basket star Astroboa nuda
Sea fans and current edges · 5–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Bastard trumpeter Latridopsis forsteri
Kelp reef, Tasmania and Victoria · 5–30 m
3 stars of 5, a good week should turn one up in Australia
Batwing coral crab Carpilius corallinus
Under coral, out at night · 3–25 m
3 stars of 5, a good week should turn one up in Bahamas
Bayer's thuridilla Thuridilla bayeri
Algae and rubble · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Bearded scorpionfish Scorpaenopsis barbata
Motionless on coral and rock · 3–30 m
3 stars of 5, a good week should turn one up in Red Sea Needs treatment Berthellina Berthellina
Rubble and rock · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Big-bellied seahorse Hippocampus abdominalis
Jetty pylons, sponge and weed, temperate south · 2–30 m
3 stars of 5, a good week should turn one up in Australia
Bighead gurnard perch Neosebastes pandus
Sand and rubble beside temperate reef · 3–40 m
3 stars of 5, a good week should turn one up in Australia Needs treatment Bivalve shrimp Conchodytes
Inside pen shells and giant clams · 3–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Black skipjack Euthynnus lineatus
Open water off the rock · 5–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Black-finned snake eel Ophichthus altipennis
Silty sand and rubble · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Blacktip shark Carcharhinus limbatus
Shallow bays and mangrove edges · 2–20 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Blue boxer shrimp Stenopus tenuirostris
Ledges and rubble slopes · 5–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Blue spiny lobster Panulirus gracilis
Rock and rubble · 3–25 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Blue triggerfish Pseudobalistes fuscus
Sand and reef · 3–40 m
3 stars of 5, a good week should turn one up in Red Sea Caution Bohol discodoris Discodoris boholiensis
Rubble, sponge and silt · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Bopyrid isopod Bopyridae
On shrimps and small crabs over rubble · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Brassy chub Kyphosus vaigiensis
Shallow rock · 1–20 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Bravo clinid Gobioclinus dendriticus
Shallow rock and algae · 1–15 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Brown-banded pipefish Corythoichthys amplexus
Rubble and dead coral · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Brownbanded bamboo shark Chiloscyllium punctatum
Rubble, sand and coral heads · 2–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Bubble snail Bullina lineata
Sand and algae · 2–20 m
3 stars of 5, a good week should turn one up in Anilao
Cadlinella Cadlinella ornatissima
Sponge on rubble · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Caribbean reef octopus Octopus briareus
Reef and rubble, at night · 1–25 m
3 stars of 5, a good week should turn one up in Bahamas
Ceylon gymnodoris Gymnodoris ceylonica
Weedy sand and rubble · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Chamberlain's nembrotha Nembrotha chamberlaini
Sea squirts on rubble and rock · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Chiton Polyplacophora
Rock, dead coral and jetty structure · 0–15 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Clarion snake eel Myrichthys pantostigmius
Sand and rubble between rock · 3–25 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Clearfin lionfish Pterois radiata
Ledges, rubble and wreckage · 2–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Clown triggerfish Balistoides conspicillum
Reef slopes, walls and drop-offs · 5–50 m
3 stars of 5, a good week should turn one up in Bali Caution Corallimorph decorator crab Cyclocoeloma tuberculatum
Silt and rubble · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Cortez angelfish Pomacanthus zonipectus
Rock and boulder ground · 5–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Cowtail stingray Pastinachus ater
Open sand and silt · 3–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Crocodile snake eel Brachysomophis crocodilinus
Open sand and silt · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Crown-of-thorns starfish Acanthaster planci
Hard coral · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Curious wormfish Gunnellichthys curiosus
Sand and fine rubble slopes · 12–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Deepwater frogfish Nudiantennarius subteres
Silt and rubble slopes · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Desirable flabellina Coryphellina exoptata
Hydroids on rubble and wrecks · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Doliolid Doliolida
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Double-ended pipefish Trachyrhamphus bicoarctatus
Open sand and silt · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Dusky flathead Platycephalus fuscus
Sand and seagrass in east coast estuaries · 0–25 m
3 stars of 5, a good week should turn one up in Australia
Dusky morwong Dactylophora nigricans
Seagrass and sand, temperate south · 1–30 m
3 stars of 5, a good week should turn one up in Australia
Eastern Pacific octopus Octopus oculifer
Rock and rubble dens · 2–25 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Eastern shovelnose ray Aptychotrema rostrata
Sand and seagrass in east coast estuaries · 1–30 m
3 stars of 5, a good week should turn one up in Australia
Echinoderm larva Echinodermata
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Egret nudibranch Ardeadoris egretta
Sponge on rubble and rock · 5–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Electric flame scallop Ctenoides ales
Crevices in rubble and rock · 3–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Elegant tritoniopsis Tritoniopsis elegans
Dendronephthya on slopes and structure · 8–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Emerald crab Mithraculus sculptus
Coral crevices · 1–25 m
3 stars of 5, a good week should turn one up in Florida
Engel's melibe Melibe engeli
Weed, hydroids and rubble · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Epaulette shark Hemiscyllium ocellatum
Great Barrier Reef flats and rubble, mostly at night · 0–15 m
3 stars of 5, a good week should turn one up in Australia
Faithful goniobranchus Goniobranchus fidelis
Sponge on rubble and rock · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
False cleanerfish Aspidontus taeniatus
Reef edges, rubble and wreckage · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Filament-finned stinger Inimicus filamentosus
Buried in sand and rubble · 5–30 m
3 stars of 5, a good week should turn one up in Red Sea Needs treatment Fire dottyback Labracinus cyclophthalmus
Rubble slopes and reef edge · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Fire shrimp Lysmata debelius
Crevices and overhangs on rock and wreckage · 5–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Fish-riding isopod Anilocra
On fish over reef and rubble · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Fivefinger razorfish Iniistius pentadactylus
Open sand · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Flagtail blanquillo Malacanthus brevirostris
Open sand with rubble · 5–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Flasher scorpionfish Scorpaenopsis macrochir
Sand, rubble and low weed · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Florida corallimorph Ricordea florida
Mats on shallow rock and rubble · 1–20 m
3 stars of 5, a good week should turn one up in Florida
Flower urchin Toxopneustes pileolus
Sand, rubble and seagrass · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Forskal's pleurobranch Pleurobranchus forskalii
Rubble and silt · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Fringelip flathead Sunagocia otaitensis
Open sand and fine rubble · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Galapagos garden eel Heteroconger klausewitzi
Sand slopes in colonies · 10–30 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Galapagos penguin Spheniscus mendiculus
Cool upwelling water · 0–25 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Galapagos slipper lobster Scyllarides astori
Under ledges, nocturnal · 5–30 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Gardiner's notodoris Notodoris gardineri
Calcareous sponge on rubble · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Gardiner's squat lobster Lauriea gardineri
Barrel sponges · 10–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Giant hermit crab Petrochirus diogenes
Sand and rubble, mostly at night · 1–25 m
3 stars of 5, a good week should turn one up in Florida
Giant moray Gymnothorax javanicus
Wrecks, rock and reef edges · 1–50 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Giant shrimpgoby Amblyeleotris fontanesii
Silty inshore sand and mud · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Giant spider crab Leptomithrax gaimardii
Sand and weed; the winter moulting aggregation in Port Phillip Bay, Victoria · 2–30 m
3 stars of 5, a good week should turn one up in Australia
Giant trevally Caranx ignobilis
Reef slopes, drop-offs and shallow flats · 3–50 m
3 stars of 5, a good week should turn one up in Papua New Guinea
Glasseye snapper Heteropriacanthus cruentatus
Under ledges and in caves · 3–30 m
3 stars of 5, a good week should turn one up in Florida
Gloomy tambja Tambja morosa
Bryozoans on rubble and rock · 5–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Gold-spotted flatworm Thysanozoon nigropapillosum
Rubble, sponge and rock · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Golden cownose ray Rhinoptera steindachneri
Schooling over sand in bays · 0–20 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Goldenstriped soapfish Grammistes sexlineatus
Rubble, ledges and dead coral · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Gracile ceratosoma Ceratosoma gracillimum
Sponge on rubble and rock · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Granular sea star Choriaster granulatus
Rubble and dead coral · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Greater soapfish Rypticus saponaceus
Under ledges and rubble · 1–25 m
3 stars of 5, a good week should turn one up in Florida Caution Green brittle star Ophiarachna incrassata
Rubble and coral reef · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Green razorfish Xyrichtys splendens
Open sand and seagrass; Blue Heron Bridge · 1–15 m
3 stars of 5, a good week should turn one up in Florida
Grey morwong Nemadactylus douglasii
Deeper temperate reef, east coast · 10–40 m
3 stars of 5, a good week should turn one up in Australia
Guam scorpionfish Scorpaenodes guamensis
Rubble and dead coral · 1–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Gulf toadfish Opsanus beta
Debris, shells and holes; Blue Heron Bridge · 0–20 m
3 stars of 5, a good week should turn one up in Florida
Gymnodoris Gymnodoris impudica
Rubble and silt · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Hairy clinging crab Mithraculus nodosus
Rock crevices, nocturnal · 3–25 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Hairy rubble crab Pilumnus
Rubble, sponge and hydroid growth · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Halimeda crab Huenia heraldica
Halimeda algae on rubble · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Harp shell Harpa
Open sand and silt · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Hell's fire anemone Actinodendron
Open sand and rubble · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment High-hat Pareques acuminatus
Under ledges and in small caves · 3–30 m
3 stars of 5, a good week should turn one up in Florida
Hispid frogfish Antennarius hispidus
Open sand · 5–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Honeycomb cowfish Acanthostracion polygonius
Reef and seagrass · 3–25 m
3 stars of 5, a good week should turn one up in Florida
Hooded melibe Melibe viridis
Silt, weed and rubble · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Horned spider crab Naxioides taurus
Rubble, hydroids and gorgonians · 5–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Hovering dartfish Ptereleotris helenae
Rubble and sand · 5–30 m
3 stars of 5, a good week should turn one up in Bahamas
Humpback whale Megaptera novaeangliae
Open water; heard on almost every dive in season · 5–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Janss' pipefish Doryrhamphus janssi
Crevices, overhangs and sponges · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Jenkins whipray Pateobatis jenkinsii
Buried on sand flats · 3–30 m
3 stars of 5, a good week should turn one up in Maldives
Krempf's phyllidiopsis Phyllidiopsis krempfi
Sponge on rubble and rock · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Kunie's goniobranchus Goniobranchus kuniei
Sponge on rubble and rock · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Largemouth blenny Labrisomus xanti
Rock and rubble · 1–20 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Larval porcupinefish Diodontidae
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Anilao
Larval scorpionfish Scorpaenidae
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Leafy seadragon Phycodurus eques
Kelp and seagrass, South Australia and south-west Western Australia · 3–20 m
3 stars of 5, a good week should turn one up in Australia
Leopard goniobranchus Goniobranchus leopardus
Sponge on rubble and rock · 8–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Lettuce sea slug Elysia crispata
Algae on shallow rubble and reef · 1–20 m
3 stars of 5, a good week should turn one up in Florida
Little weed whiting Neoodax balteatus
Seagrass and algae, temperate south · 1–20 m
3 stars of 5, a good week should turn one up in Australia
Loggerhead turtle Caretta caretta
Reef and sand, southern Great Barrier Reef · 1–30 m
3 stars of 5, a good week should turn one up in Australia
Long-nosed pipefish Trachyrhamphus longirostris
Open sand and silt · 5–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Longsnout butterflyfish Prognathodes aculeatus
Wall · 15–40 m
3 stars of 5, a good week should turn one up in Bahamas
Longsnout flathead Thysanophrys chiltonae
Open sand and fine rubble · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Longspine waspfish Paracentropogon longispinis
Silt, weed and rubble · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Longtail stingray Hypanus longus
Sand and rubble between rock ridges · 5–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo Needs treatment Lookdown Selene vomer
Bridges and pilings; Blue Heron Bridge · 1–20 m
3 stars of 5, a good week should turn one up in Florida
Magnificent anemone shrimp Periclimenes magnificus
Sand-dwelling anemones and corallimorphs · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Many-armed sand star Luidia
Open sand and silt · 3–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Maori octopus Macroctopus maorum
Temperate reef and sand, mostly at night · 2–30 m
3 stars of 5, a good week should turn one up in Australia
Marbled shrimp Saron marmoratus
Rubble and rock crevices · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Mexican four-eyed octopus Octopus hubbsorum
Holes and boulder ground · 1–25 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Mototi octopus Amphioctopus mototi
Debris and bottles on silt · 5–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Mullins' nudibranch Tambja mullineri
On bryozoan on rocky reef · 5–30 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Munk's devil ray Mobula munkiana
Open water in schools, often hundreds · 0–25 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Murex snail Muricidae
Rubble, rock and sand · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Narcomedusa Narcomedusae
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Navanax Navanax aenigmaticus
Sand and rubble · 2–20 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Oceanic whitetip shark Carcharhinus longimanus
Open water off offshore reefs, Oct–Jan · 0–30 m
3 stars of 5, a good week should turn one up in Red Sea
Ocellated eagle ray Aetobatus ocellatus
Open water over slopes, walls and sand · 5–50 m
3 stars of 5, a good week should turn one up in Bali Needs treatment Orange-black dragonet Dactylopus kuiteri
Coastal sand and mud · 3–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Orange-striped goby Amblygobius decussatus
Sand and rubble near reef · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Orangebanded stingfish Choridactylus multibarbus
Silt and fine sand · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Ornate cowfish Aracana ornata
Seagrass, weed and jetty pylons, temperate south · 1–25 m
3 stars of 5, a good week should turn one up in Australia
Ornate dermatobranchus Dermatobranchus ornatus
Silt and fine sand · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Ornate octopus Callistoctopus ornatus
Rubble and sand · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Ornate spiny lobster Panulirus ornatus
Rubble, wrecks and debris · 1–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Ornate wobbegong Orectolobus ornatus
Coral and rocky reef, in crevices · 3–30 m
3 stars of 5, a good week should turn one up in Australia Needs treatment Pacific red sheephead Bodianus darwini
Deeper rocky reef · 15–40 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Pacific sierra Scomberomorus sierra
Fast-moving schools in open water · 2–25 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Painted spiny lobster Panulirus versicolor
Ledges, wrecks and rubble · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Palenose moray Echidna nocturna
Rock and rubble · 1–25 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Panamic arrow crab Stenorhynchus debilis
Ledges and sponge · 5–30 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Pantropical spotted dolphin Stenella attenuata
Open water, usually at the surface · 0–20 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Papuan scorpionfish Scorpaenopsis papuensis
Rubble and encrusted debris · 3–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Peacock razorfish Iniistius pavo
Open sand and silt · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Peacock sole Pardachirus pavoninus
Open sand and silt · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Pebble crab Leucosiidae
Open sand and silt · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Pencil urchin Cidaroida
Rubble, ledges and dead coral · 3–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Permit Trachinotus falcatus
Wrecks and sand flats · 3–30 m
3 stars of 5, a good week should turn one up in Florida
Peron's pleurobranch Pleurobranchus peronii
Sand, silt and rubble · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Pharaoh cuttlefish Acanthosepion pharaonis
Sand and rubble near reef · 1–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Philinopsis Philinopsis cyanea
Fine sand and silt · 1–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Phyllosoma Achelata
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Pillar coral Dendrogyra cylindrus
Reef slope · 3–25 m
3 stars of 5, a good week should turn one up in Cayman Islands
Pineapple sea cucumber Thelenota ananas
Sand and rubble · 3–30 m
3 stars of 5, a good week should turn one up in Papua New Guinea
Platydoris Platydoris
Under rubble and loose rock · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Potato cod Epinephelus tukula
Coral Sea and northern Great Barrier Reef, at the Cod Hole · 10–40 m
3 stars of 5, a good week should turn one up in Australia
Pterotrachea Pterotrachea
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Purple-lined nembrotha Nembrotha purpureolineata
Sea squirts on rubble and rock · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Purplemouth moray Gymnothorax vicinus
Reef and ledges · 1–30 m
3 stars of 5, a good week should turn one up in Florida Needs treatment Pyrosome Pyrosoma
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Rainbow mantis shrimp Pseudosquilla ciliata
Rubble, seagrass and coarse sand · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Rainbow parrotfish Scarus guacamaia
Reef near mangrove systems · 3–25 m
3 stars of 5, a good week should turn one up in Bahamas
Rainbow scorpionfish Scorpaenodes xyris
Rock ledges and crevices · 3–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo Caution Red Sea flasher wrasse Paracheilinus octotaenia
Rubble slopes, males display at dusk · 5–30 m
3 stars of 5, a good week should turn one up in Red Sea
Red Sea mimic blenny Ecsenius gravieri
Coral and rock, in small holes · 2–25 m
3 stars of 5, a good week should turn one up in Red Sea
Red Sea nembrotha Nembrotha megalocera
On tunicates · 5–30 m
3 stars of 5, a good week should turn one up in Red Sea
Red-lipped batfish Ogcocephalus darwini
Open sand and rubble · 10–40 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Redspot wrasse Stethojulis bandanensis
Shallow rock and rubble · 1–15 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Reef stonefish Synanceia verrucosa
Coral rubble and rock · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Medical emergency Reticulate goniobranchus Goniobranchus reticulatus
Sponge on rubble and rock · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Revillagigedo barnacle blenny Acanthemblemaria mangognatha
Empty holes in rock · 0–10 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Revillagigedo grunt Anisotremus perezponcedeleoni
Rock and boulder ground · 5–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Rhynchoteuthion paralarva Ommastrephidae
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Rigid shrimpfish Centriscus scutatus
Sand, sea whips and rubble · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Ringed chromodoris Goniobranchus annulatus
Reef and rubble · 3–30 m
3 stars of 5, a good week should turn one up in Red Sea
Robust ghost pipefish Solenostomus cyanopterus
Seagrass and drifting algae · 3–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Rock blenny Entomacrodus chiostictus
Shallow rock in the surge zone · 0–5 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Rock hind Epinephelus adscensionis
Rocky ground and wrecks · 5–35 m
3 stars of 5, a good week should turn one up in Florida
Rosy-lipped batfish Ogcocephalus porrectus
Sand and rubble below the reef · 15–40 m
3 stars of 5, a good week should turn one up in Cocos Island
Rough flame scallop Ctenoides scaber
Crevices in reef and under ledges · 1–30 m
3 stars of 5, a good week should turn one up in Florida
Sand dollar Clypeasteroida
Open sand and silt · 2–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Sandbird octopus Amphioctopus aegina
Open sand and silt · 1–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Sapphire copepod Sapphirina
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Anilao
Sea cucumber scale worm Gastrolepidia clavigera
Sand and rubble · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Secretary blenny Acanthemblemaria maria
Holes in hard coral · 1–15 m
3 stars of 5, a good week should turn one up in Bahamas
Seven-eleven crab Carpilius maculatus
Rubble and sand at night · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Sharp-tail squid Uroteuthis
Water column over sand · 2–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Sharptail eel Myrichthys breviceps
Sand, rubble and seagrass · 1–25 m
3 stars of 5, a good week should turn one up in Florida
Shireen's phyllidiopsis Phyllidiopsis shireenae
Sponge on rubble and rock · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Siboga trinchesia Trinchesia sibogae
Hydroids on rubble and wrecks · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Side-gilled slug Pleurobranchus grandis
Rubble, ascidians and silt · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Sinuate miamira Miamira sinuata
Sponge on rubble and rock · 5–30 m
3 stars of 5, a good week should turn one up in Ambon
Slate pencil urchin Eucidaris tribuloides
Under rubble and in crevices · 1–25 m
3 stars of 5, a good week should turn one up in Florida
Slipper lobster Parribacus antarcticus
Ledges, caves, wrecks and debris · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Smooth moon crab Ashtoret lunaris
Open sand and silt · 0–15 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Socorro serrano Serranus socorroensis
Sand and rubble between rock · 5–20 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Socorro wrasse Halichoeres insularis
Shallow rock and rubble · 5–20 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Southern blue-ringed octopus Hapalochlaena maculosa
Rock pools, rubble and shells, temperate south · 0–20 m
3 stars of 5, a good week should turn one up in Australia Medical emergency Southern reef squid Sepioteuthis australis
Seagrass and rocky reef, temperate south · 1–25 m
3 stars of 5, a good week should turn one up in Australia
Southern rock lobster Jasus edwardsii
Crevices on temperate rocky reef · 3–40 m
3 stars of 5, a good week should turn one up in Australia
Spanish dancer Hexabranchus sanguineus
Rubble and sponge-covered rock · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Spinner dolphin Stenella longirostris
Resting in sheltered lagoons by day · 0–20 m
3 stars of 5, a good week should turn one up in Red Sea
Spiny waspfish Ablabys macracanthus
Sand rubble and weed · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Splendid garden eel Gorgasia preclara
Open sand with current · 20–50 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Sponge snapping shrimp Synalpheus
Sponges, crinoids and rubble · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Spoon worm Echiura
Sand, silt and under rubble · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Spotted pipefish Stigmatopora argus
Seagrass and algae, temperate south and east · 1–15 m
3 stars of 5, a good week should turn one up in Australia
Spotted scorpionfish Scorpaena plumieri
Rock, rubble and reef base · 1–30 m
3 stars of 5, a good week should turn one up in Florida Needs treatment Spotted sea hare Aplysia dactylomela
Shallow rubble and seagrass · 0–10 m
3 stars of 5, a good week should turn one up in Florida
Spotted snake eel Myrichthys maculosus
Open sand and rubble · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Spotted wrasse Anampses meleagrides
Sand and rubble near reef · 5–30 m
3 stars of 5, a good week should turn one up in Maldives
Staghorn coral Acropora cervicornis
Mid-depth reef and restoration plots · 3–20 m
3 stars of 5, a good week should turn one up in Florida
Star bornella Bornella stellifer
Hydroids on rubble and wrecks · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Star-eye hermit crab Dardanus venosus
Sand and rubble at night · 1–25 m
3 stars of 5, a good week should turn one up in Florida
Stareye parrotfish Calotomus carolinus
Rock and rubble · 3–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Striped triplefin Helcogramma striatum
Sponge, rubble and dead coral · 3–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Sun anemone Stichodactyla helianthus
Shallow rock and rubble · 0–10 m
3 stars of 5, a good week should turn one up in Bahamas Caution Swallowtail angelfish Genicanthus melanospilos
Open water over walls and steep slopes · 15–60 m
3 stars of 5, a good week should turn one up in Bali
Target shrimpgoby Cryptocentrus strigilliceps
Shallow sand and rubble · 1–12 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Tarpon Megalops atlanticus
Bridges, channels and wrecks; regular at Blue Heron Bridge · 1–25 m
3 stars of 5, a good week should turn one up in Florida
Tasselled wobbegong Eucrossorhinus dasypogon
Under table coral, ledges and caves · 3–35 m
3 stars of 5, a good week should turn one up in Papua New Guinea Needs treatment Tessellate halgerda Halgerda tessellata
Sponge on rubble and rock · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Thornback cowfish Lactoria fornasini
Sand, rubble and seagrass · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Caution Thorny oyster Spondylus
Rock, dead coral and wreckage · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Tiger snake eel Myrichthys xysturus
Sand and rubble · 3–25 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Tinsel squirrelfish Sargocentron suborbitale
Crevices and ledges · 5–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo Caution Tomopteris Tomopteris
Blackwater, open water at night · 0–25 m
3 stars of 5, a good week should turn one up in Anilao
Tongue-biter isopod Cymothoa
On fish over rubble and sand · 1–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Tonguefish Cynoglossidae
Sand and silt · 2–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Triton's trumpet Charonia tritonis
Sand, rubble and reef · 3–30 m
3 stars of 5, a good week should turn one up in Papua New Guinea
Twostripe goby Valenciennea helsdingenii
Sand and rubble · 10–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Urchin cardinalfish Siphamia tubifer
Among long-spined urchins · 2–20 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Urchin shrimp Stegopontonia commensalis
Long-spined urchins · 1–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Variable jawfish Opistognathus solorensis
Silty sand with rubble · 5–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Variable sabretooth blenny Petroscirtes variabilis
Seagrass, sand and debris · 1–15 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Verco's tambja Tambja verconis
Bryozoan colonies on temperate reef · 5–30 m
3 stars of 5, a good week should turn one up in Australia
Walking coral Heteropsammia cochlea
Soft horizontal sediment · 15–50 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Warty dendrodoris Dendrodoris tuberculosa
Rubble and dead coral · 3–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Western blue groper Achoerodus gouldii
Temperate rocky reef, South and Western Australia · 3–40 m
3 stars of 5, a good week should turn one up in Australia
Western chromodoris Chromodoris westraliensis
Sponge on rocky reef, west and south coasts · 3–25 m
3 stars of 5, a good week should turn one up in Australia
Western rock lobster Panulirus cygnus
Limestone reef and ledges, Western Australia · 1–40 m
3 stars of 5, a good week should turn one up in Australia
Whip coral shrimp Pontonides ankeri
Sea whips and wire corals · 10–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
White-lipped eeltail catfish Paraplotosus albilabris
Silty sand near structure · 2–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment White's seahorse Hippocampus whitei
Sponge, soft coral and netting in east coast harbours · 2–25 m
3 stars of 5, a good week should turn one up in Australia
Wide-bodied pipefish Stigmatopora nigra
Seagrass beds, temperate south · 1–15 m
3 stars of 5, a good week should turn one up in Australia
Xeno crab Xenocarcinus tuberculatus
Whip corals and gorgonians · 10–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Yano's shrimpgoby Amblyeleotris yanoi
Coarse sand at the foot of slopes · 12–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Yellow-banded pipefish Dunckerocampus pessuliferus
Sand and silt slopes with rubble · 12–40 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Yellow-brown wrasse Thalassoma lutescens
Rock and rubble · 3–30 m
3 stars of 5, a good week should turn one up in Islas Revillagigedo
Yellowfin grouper Mycteroperca venenosa
Reef and wall · 10–35 m
3 stars of 5, a good week should turn one up in Bahamas Caution Yellowfin tuna Thunnus albacares
Open water · 5–40 m
3 stars of 5, a good week should turn one up in Galapagos Islands
Yellowmouth moray Gymnothorax nudivomer
Reef crevices · 5–40 m
3 stars of 5, a good week should turn one up in Red Sea Needs treatment Zanzibar whip coral shrimp Dasycaris zanzibarica
Wire corals and sea whips on slopes · 10–35 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Zebra mantis shrimp Lysiosquillina maculata
Open sand · 3–30 m
3 stars of 5, a good week should turn one up in Lembeh Strait Needs treatment Zebra shark Stegostoma tigrinum
Resting on sand between coral · 3–30 m
3 stars of 5, a good week should turn one up in Maldives
Zephyr hypselodoris Hypselodoris zephyra
Sponge on rubble and rock · 5–25 m
3 stars of 5, a good week should turn one up in Lembeh Strait
Acorn worm Enteropneusta
Open sand · 1–20 m
4 stars of 5, two or three a season in Lembeh Strait
Aegires Aegires
Calcareous sponge on rubble and overhangs · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Ambon cerberilla Cerberilla ambonensis
Silt and fine sand · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Atagema Atagema
Silty rubble and sponge · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Atlantic banded pipefish Micrognathus crinitus
Rubble and algae; Blue Heron Bridge · 1–20 m
4 stars of 5, two or three a season in Florida
Atlantic guitarfish Pseudobatos lentiginosus
Shallow sand; Blue Heron Bridge · 1–20 m
4 stars of 5, two or three a season in Florida
Atlantic sea nettle Chrysaora quinquecirrha
Estuaries and coastal water, summer · 0–10 m
4 stars of 5, two or three a season in Florida Caution Atlantic triton Charonia variegata
Reef and rubble at night · 3–30 m
4 stars of 5, two or three a season in Bahamas
Baba's phyllidia Phyllidia babai
Sponge on rubble and rock · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait Caution Baeolidia Baeolidia
Rubble, weed and anemones on silt · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Bailer shell Melo
Open sand and silt · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Banded toadfish Halophryne diemensis
Rubble, ledges and debris · 1–20 m
4 stars of 5, two or three a season in Lembeh Strait
Bandtail sea robin Prionotus ophryas
Sand; Blue Heron Bridge · 1–25 m
4 stars of 5, two or three a season in Florida
Barracudina Paralepididae
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Barred moray Echidna polyzona
Shallow rubble and dead coral · 1–15 m
4 stars of 5, two or three a season in Lembeh Strait Caution Bayer's felimare Felimare bayeri
Sponge on the wall · 10–35 m
4 stars of 5, two or three a season in Bahamas
Bearded brotula Brotula multibarbata
Ledges and rubble beside sand · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Bearded ghoul Inimicus caledonicus
Open sand and silt · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Black cyerce Cyerce nigra
Green algae in the shallows · 1–15 m
4 stars of 5, two or three a season in Lembeh Strait
Bottletail squid Sepiadarium kochii
Silt and fine sand · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Carrier shell Xenophora
Sand and silt · 15–50 m
4 stars of 5, two or three a season in Lembeh Strait
Ceylon plocamopherus Plocamopherus ceylonicus
Sand and rubble · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Clipperton grouper Epinephelus clippertonensis
Volcanic rock and boulder ground · 10–35 m
4 stars of 5, two or three a season in Islas Revillagigedo
Cockatoo flounder Samaris cristatus
Fine sand and silt · 10–40 m
4 stars of 5, two or three a season in Lembeh Strait
Coral catshark Atelomycterus marmoratus
Coral heads, crevices and rubble · 3–30 m
4 stars of 5, two or three a season in Anilao
Coral gall crab Cryptochiridae
Massive and encrusting corals · 2–25 m
4 stars of 5, two or three a season in Lembeh Strait
Coral hermit crab Paguritta
Massive coral heads · 2–25 m
4 stars of 5, two or three a season in Lembeh Strait
Cownose ray Rhinoptera bonasus
Open sand and mid-water, in schools · 2–25 m
4 stars of 5, two or three a season in Florida
Creeping comb jelly Coeloplana
Soft corals, sea whips and sea stars · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Crinoid clingfish Discotrema
Feather stars on rubble and slope · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Crinoid crab Ceratocarcinus
On feather stars · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Cystisoma Cystisoma
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Delicate ghost pipefish Solenostomus leptosoma
Sea whips, crinoids and rubble · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Donald Duck shrimp Leander plumosus
Silt and burrow entrances · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Doto Doto
Hydroids on rubble and structure · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Duckbill sleeper Butis butis
Silty shallows, pilings and mangrove edge · 0–12 m
4 stars of 5, two or three a season in Lembeh Strait
Elbow crab Parthenopidae
Rubble and coarse sand · 5–35 m
4 stars of 5, two or three a season in Lembeh Strait
Eubranchus Eubranchus
Hydroids on rubble and structure · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Flightless cormorant Nannopterum harrisi
Western islands · 0–20 m
4 stars of 5, two or three a season in Galapagos Islands
Freckled cardinalfish Phaeoptyx conklini
Inside sponges and under rubble · 1–25 m
4 stars of 5, two or three a season in Florida
Freckled frogfish Abantennarius coccineus
Rubble and shallow rock · 1–25 m
4 stars of 5, two or three a season in Lembeh Strait
Frillfin turkeyfish Pterois mombasae
Rubble and sand at depth · 10–50 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Fringeback nudibranch Dondice occidentalis
Hydroids on rubble and pilings · 1–20 m
4 stars of 5, two or three a season in Florida
Galapagos bullhead shark Heterodontus quoyi
Rocky ledges and crevices, nocturnal · 5–25 m
4 stars of 5, two or three a season in Galapagos Islands
Galapagos fur seal Arctocephalus galapagoensis
Shaded rocky shore · 0–20 m
4 stars of 5, two or three a season in Galapagos Islands
Giant electric ray Narcine entemedor
Sand pockets between boulders · 5–25 m
4 stars of 5, two or three a season in Islas Revillagigedo Caution Giant grouper Epinephelus lanceolatus
Coral reef, caves and wrecks, tropical north · 5–40 m
4 stars of 5, two or three a season in Australia
Glass squid Cranchiidae
Blackwater, open water at night · 0–30 m
4 stars of 5, two or three a season in Lembeh Strait
Gnathiid isopod Gnathiidae
On fish over rubble and sand · 1–30 m
4 stars of 5, two or three a season in Lembeh Strait
Goby-fin gymnodoris Gymnodoris nigricolor
Silty sand at shrimpgoby burrows · 5–25 m
4 stars of 5, two or three a season in Lembeh Strait
Goldspotted eel Myrichthys ocellatus
Rubble and seagrass, mostly at night · 1–25 m
4 stars of 5, two or three a season in Florida
Goram dragonet Diplogrammus goramensis
Silty sand and fine rubble · 2–20 m
4 stars of 5, two or three a season in Lembeh Strait
Heart urchin Spatangoida
Open sand and silt · 3–35 m
4 stars of 5, two or three a season in Lembeh Strait
Hoplodoris Hoplodoris
Sponge on silty rubble · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Hourglass moray Muraena clepsydra
Rock crevices · 5–30 m
4 stars of 5, two or three a season in Islas Revillagigedo
Janolus Janolus
Bryozoans on rubble and structure · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Kalinga Kalinga ornata
Open sand and silt · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Larvacean Appendicularia
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Larval frogfish Antennariidae
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Lesser electric ray Narcine bancroftii
Sand and rubble; Blue Heron Bridge · 1–20 m
4 stars of 5, two or three a season in Florida Caution Lined seahorse Hippocampus erectus
Seagrass, sponge and debris; Blue Heron Bridge · 1–20 m
4 stars of 5, two or three a season in Florida
Long-arm squid Chiroteuthis
Blackwater, open water at night · 0–30 m
4 stars of 5, two or three a season in Lembeh Strait
Longlure frogfish Antennarius multiocellatus
Sponge on reef; also on rubble at Blue Heron Bridge · 3–25 m
4 stars of 5, two or three a season in Florida
Man-of-war fish Nomeus gronovii
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Anilao
Marbled electric ray Torpedo sinuspersici
Buried on sand · 3–30 m
4 stars of 5, two or three a season in Red Sea Needs treatment Marbled snake eel Callechelys marmorata
Open sand and silt · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Marbled stingfish Cottapistus cottoides
Silt and fine sand · 1–20 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Marionia Marionia
Soft coral on rubble and structure · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Masked moray Gymnothorax panamensis
Rock crevices · 5–30 m
4 stars of 5, two or three a season in Islas Revillagigedo
Misspelled blenny Labrisomus socorroensis
Shallow rock and rubble · 1–10 m
4 stars of 5, two or three a season in Islas Revillagigedo
Mozambique scorpionfish Parascorpaena mossambica
Rubble and dead coral · 1–20 m
4 stars of 5, two or three a season in Lembeh Strait Caution Mud shrimp Axiidea
Silt and fine sand · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Multibarred triplefin Axoclinus multicinctus
Open rock surfaces · 1–20 m
4 stars of 5, two or three a season in Islas Revillagigedo
Mushroom coral pipefish Siokunichthys nigrolineatus
Mushroom corals · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Needle-tooth moray Uropterygius macrocephalus
Shallow rock and rubble · 1–20 m
4 stars of 5, two or three a season in Islas Revillagigedo
Negros pipefish Doryrhamphus negrosensis
Rubble, ledges and crevices · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Ocean sunfish Mola alexandrini
Cold upwelling water, western islands · 5–40 m
4 stars of 5, two or three a season in Galapagos Islands
Ocellated pipefish Corythoichthys ocellatus
Rubble and dead coral · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Ocellated waspfish Apistus carinatus
Silt and fine sand · 5–40 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Okenia Okenia
Bryozoan and ascidian crusts on rubble · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Olive grouper Hyporthodus cifuentesi
Deeper rock and boulder slopes · 25–40 m
4 stars of 5, two or three a season in Islas Revillagigedo
Olive ridley turtle Lepidochelys olivacea
Open water and surface · 0–20 m
4 stars of 5, two or three a season in Cocos Island
Olive-headed sea snake Hydrophis major
Northern sand and silt · 1–25 m
4 stars of 5, two or three a season in Australia Medical emergency Ornate sagaminopteron Sagaminopteron ornatum
Sponge on rubble and rock · 5–25 m
4 stars of 5, two or three a season in Lembeh Strait
Pacific seahorse Hippocampus ingens
Gorgonians and black coral on · 5–25 m
4 stars of 5, two or three a season in Galapagos Islands
Painted elysia Thuridilla picta
Rubble and algal turf · 3–20 m
4 stars of 5, two or three a season in Florida
Parasitic barnacle Rhizocephala
On crabs over rubble and sand · 1–30 m
4 stars of 5, two or three a season in Lembeh Strait
Pea crab Pinnotheridae
Inside bivalves, cucumbers and worm tubes · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Peanut worm Sipuncula
Sediment, rubble and dead coral · 1–30 m
4 stars of 5, two or three a season in Lembeh Strait
Pearlfish Carapidae
Open sand with holothurians · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Pelagic red crab Grimothea planipes
Open water in swarms, El Niño years · 0–30 m
4 stars of 5, two or three a season in Galapagos Islands
Phylliroe Phylliroe
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Picturesque dragonet Synchiropus picturatus
Coral rubble in the shallows · 1–15 m
4 stars of 5, two or three a season in Lembeh Strait
Polka-dot batfish Ogcocephalus cubifrons
Sand and rubble; Blue Heron Bridge · 1–30 m
4 stars of 5, two or three a season in Florida
Porcupine ray Urogymnus asperrimus
Sand flats and lagoon · 3–30 m
4 stars of 5, two or three a season in Maldives
Porites phestilla Phestilla lugubris
Massive Porites coral · 2–25 m
4 stars of 5, two or three a season in Lembeh Strait
Poss's scorpionfish Scorpaenopsis possi
Rubble and dead coral · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Pygmy pipehorse Acentronura tentaculata
Algae, hydroids and rubble · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Queen helmet Cassis madagascariensis
Buried in open sand · 3–25 m
4 stars of 5, two or three a season in Florida
Redlight goby Coryphopterus urospilus
Rock and coral heads; cleans · 3–25 m
4 stars of 5, two or three a season in Galapagos Islands
Reef lobster Enoplometopus occidentalis
Crevices in rock and rubble · 5–40 m
4 stars of 5, two or three a season in Lembeh Strait Caution Reptilian snake eel Brachysomophis henshawi
Open sand and silt · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait Caution Ribbon worm Nemertea
Silt and fine sand · 1–25 m
4 stars of 5, two or three a season in Lembeh Strait Caution Richardson's moray Gymnothorax richardsonii
Rubble and dead coral · 1–15 m
4 stars of 5, two or three a season in Lembeh Strait Caution Ridgenose pipefish Halicampus dunckeri
Rubble and coral bases · 2–25 m
4 stars of 5, two or three a season in Lembeh Strait
Roboastra Roboastra gracilis
Sea squirts on rubble and rock · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Rostanga Rostanga
Red encrusting sponge on rubble · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Saddled snake eel Leiuranus semicinctus
Shallow sand and seagrass · 1–15 m
4 stars of 5, two or three a season in Lembeh Strait
Sailfin blenny Emblemaria pandionis
Worm tubes in rubble · 1–15 m
4 stars of 5, two or three a season in Florida
Sanguine frogfish Abantennarius sanguineus
Rubble and sponge on rocky bottom · 5–30 m
4 stars of 5, two or three a season in Galapagos Islands
Sea angel Gymnosomata
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Sea bunny Jorunna parva
Sponge on rubble · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Sea spider Pycnogonida
Hydroids on rubble · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Sea swallow Glaucus atlanticus
Blackwater, surface water at night · 0–5 m
4 stars of 5, two or three a season in Anilao Caution Short-bodied pipefish Choeroichthys brachysoma
Weed and rubble in the shallows · 1–12 m
4 stars of 5, two or three a season in Lembeh Strait
Short-headed seahorse Hippocampus breviceps
Brown algae and seagrass, South Australia and Victoria · 2–20 m
4 stars of 5, two or three a season in Australia
Short-nosed tripodfish Triacanthus biaculeatus
Silty sand and mud · 5–30 m
4 stars of 5, two or three a season in Lembeh Strait
Shortfin pipefish Cosmocampus elucens
Seagrass and rubble · 1–20 m
4 stars of 5, two or three a season in Florida
Shortnose batfish Ogcocephalus nasutus
Sand and rubble · 1–30 m
4 stars of 5, two or three a season in Florida
Sicklefin devil ray Mobula tarapacana
Open water off the northern islands · 10–40 m
4 stars of 5, two or three a season in Galapagos Islands
Siphopteron Siphopteron
Fine rubble and silt · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Smoothtail devil ray Mobula thurstoni
Open water around the rocks and seamounts · 5–30 m
4 stars of 5, two or three a season in Islas Revillagigedo
Socorro blenny Hypsoblennius proteus
Shallow rock and rubble · 0–5 m
4 stars of 5, two or three a season in Islas Revillagigedo
Soft coral phyllodesmium Phyllodesmium briareum
Encrusting soft coral · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Splitfin flashlightfish Anomalops katoptron
Harbour walls and overhangs at night · 3–35 m
4 stars of 5, two or three a season in Ambon
Sponge crab Tumidodromia dormia
Rubble and sponge on slopes · 3–30 m
4 stars of 5, two or three a season in Lembeh Strait
Spotfin burrfish Chilomycterus reticulatus
Under ledges and in caves · 5–30 m
4 stars of 5, two or three a season in Islas Revillagigedo
Spotfin frogfish Abantennarius nummifer
Rubble and sponge on slopes · 3–40 m
4 stars of 5, two or three a season in Lembeh Strait
Starry night octopus Callistoctopus luteus
Sand, rubble and weed · 2–25 m
4 stars of 5, two or three a season in Lembeh Strait
Sydney pygmy pipehorse Idiotropiscis lumnitzeri
Red algae on rocky reef, Sydney and the New South Wales coast · 5–25 m
4 stars of 5, two or three a season in Australia
Tangaroa shrimpgoby Ctenogobiops tangaroai
Coarse sand at the foot of slopes · 15–40 m
4 stars of 5, two or three a season in Lembeh Strait
Tasselled anglerfish Rhycherus filamentosus
Sponge and rock, southern Australia · 3–30 m
4 stars of 5, two or three a season in Australia
Tasselled filefish Chaetodermis penicilligerus
Weed and hydroid growth on sand · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Taylor's garden eel Heteroconger taylori
Sand slopes with current · 10–40 m
4 stars of 5, two or three a season in Bali
Teddy bear crab Polydectus cupulifer
Rubble and silt · 1–20 m
4 stars of 5, two or three a season in Lembeh Strait
Thordisa Thordisa
Sponge on rubble · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Three-spot frogfish Lophiocharon trisignatus
Rubble, debris and jetty pilings · 1–15 m
4 stars of 5, two or three a season in Lembeh Strait
Tiger pipefish Filicampus tigris
Sand and rubble, east coast · 3–25 m
4 stars of 5, two or three a season in Australia
Tiger shark Galeocerdo cuvier
Sand flats and channel mouths · 5–30 m
4 stars of 5, two or three a season in Cocos Island
Tiger shrimp Phyllognathia ceratophthalma
Rubble and sponge · 5–25 m
4 stars of 5, two or three a season in Lembeh Strait
Tigertail seahorse Hippocampus comes
Sponge, weed and rubble · 3–20 m
4 stars of 5, two or three a season in Lembeh Strait
Trapania Trapania
Sponge and bryozoan growth on rubble · 5–25 m
4 stars of 5, two or three a season in Lembeh Strait
Twin-spot lionfish Dendrochirus biocellatus
Ledges, caves and rubble · 3–40 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Venus girdle Cestum veneris
Blackwater, open water at night · 0–25 m
4 stars of 5, two or three a season in Lembeh Strait
Violet snail Janthina
Blackwater, surface water at night · 0–5 m
4 stars of 5, two or three a season in Lembeh Strait
Wahoo Acanthocybium solandri
Open water off the rock · 5–40 m
4 stars of 5, two or three a season in Islas Revillagigedo
Wavy bubble snail Micromelo undatus
Sand, algae and rubble · 1–20 m
4 stars of 5, two or three a season in Lembeh Strait
Weedy rhinopias Rhinopias frondosa
Rubble · 8–30 m
4 stars of 5, two or three a season in Ambon Needs treatment Whiteface waspfish Richardsonichthys leucogaster
Silt and fine sand · 3–40 m
4 stars of 5, two or three a season in Lembeh Strait Needs treatment Whitenose shark Nasolamia velox
Rock slopes and sand at the base of the walls · 15–40 m
4 stars of 5, two or three a season in Islas Revillagigedo
Whitespotted wedgefish Rhynchobatus djiddensis
Sand flats and channel mouths · 3–30 m
4 stars of 5, two or three a season in Maldives
Winged pipefish Halicampus macrorhynchus
Weed, rubble and silt · 3–25 m
4 stars of 5, two or three a season in Lembeh Strait
Yellowspotted scorpionfish Sebastapistes cyanostigma
Coral heads on rubble · 2–20 m
4 stars of 5, two or three a season in Lembeh Strait Caution Bigeye thresher Alopias superciliosus
Rare · 25–40 m
5 stars of 5, a handful of records in Galapagos Islands
Bowmouth guitarfish Rhina ancylostomus
Northern sand flats and reef edges · 3–30 m
5 stars of 5, a handful of records in Australia
Brackishwater frogfish Antennarius biocellatus
Silty shallows near river mouths and mangrove · 0–10 m
5 stars of 5, a handful of records in Lembeh Strait
Brock's pipefish Halicampus brocki
Rubble and coral bases · 3–25 m
5 stars of 5, a handful of records in Lembeh Strait
Ceratioid larva Ceratioidei
Blackwater, open water at night · 0–30 m
5 stars of 5, a handful of records in Lembeh Strait
Chambered nautilus Nautilus pompilius
Deep slopes and drop-offs · 20–40 m
5 stars of 5, a handful of records in Papua New Guinea
Coleman's pygmy seahorse Hippocampus colemani
Seagrass and algae · 1–15 m
5 stars of 5, a handful of records in Lembeh Strait
Cryptic frogfish Histiophryne cryptacanthus
Rubble, sponge and algae · 3–25 m
5 stars of 5, a handful of records in Lembeh Strait
Distant goby Lythrypnus insularis
Rock faces and crevices · 3–20 m
5 stars of 5, a handful of records in Islas Revillagigedo
Dugong Dugong dugon
Seagrass beds in sheltered bays · 1–12 m
5 stars of 5, a handful of records in Red Sea
Dwarf seahorse Hippocampus zosterae
Shallow seagrass beds · 0–5 m
5 stars of 5, a handful of records in Florida
False killer whale Pseudorca crassidens
Open water between the islands · 0–30 m
5 stars of 5, a handful of records in Islas Revillagigedo
Flatback turtle Natator depressus
Northern soft bottoms and inshore water · 1–25 m
5 stars of 5, a handful of records in Australia
Hardtail moray Anarchias galapagensis
Shallow rubble · 1–15 m
5 stars of 5, a handful of records in Islas Revillagigedo
Hardwicke's pipehorse Solegnathus hardwickii
Deep sponge and gorgonian ground · 20–40 m
5 stars of 5, a handful of records in Australia
Hatchetfish Sternoptychidae
Blackwater, open water at night · 0–25 m
5 stars of 5, a handful of records in Lembeh Strait
Hedgehog seahorse Hippocampus spinosissimus
Rubble and sponge on sand · 10–40 m
5 stars of 5, a handful of records in Dauin & Dumaguete
Island triplefin Enneanectes exsul
Shallow rock · 0–5 m
5 stars of 5, a handful of records in Islas Revillagigedo
Lacy rhinopias Rhinopias aphanes
Crinoid and soft coral · 8–35 m
5 stars of 5, a handful of records in Papua New Guinea Needs treatment Larval sunfish Molidae
Blackwater, open water at night · 0–25 m
5 stars of 5, a handful of records in Anilao
Lembeh pygmy pipedragon Kyonemichthys rumengani
Sponge and wall overhangs · 10–30 m
5 stars of 5, a handful of records in Lembeh Strait
Lomanotus Lomanotus
Hydroid colonies on rubble and structure · 5–30 m
5 stars of 5, a handful of records in Lembeh Strait
Longsnout seahorse Hippocampus reidi
Gorgonians and sponge · 3–25 m
5 stars of 5, a handful of records in Florida
Ocellated frogfish Fowlerichthys ocellatus
Sand, rubble and sponge · 3–30 m
5 stars of 5, a handful of records in Florida
Pacific electric ray Tetronarce californica
Sand and rubble, rare · 10–30 m
5 stars of 5, a handful of records in Galapagos Islands
Pacific nurse shark Ginglymostoma unami
Under ledges, rare · 5–25 m
5 stars of 5, a handful of records in Galapagos Islands
Pelagic stingray Pteroplatytrygon violacea
Open water, rare · 0–30 m
5 stars of 5, a handful of records in Cocos Island
Pelagic thresher Alopias pelagicus
Open water off the offshore rocks · 15–40 m
5 stars of 5, a handful of records in Islas Revillagigedo
Psychedelic frogfish Histiophryne psychedelica
Rubble crevices and cracks · 5–20 m
5 stars of 5, a handful of records in Ambon
Purpleback flying squid Sthenoteuthis oualaniensis
Open water at night · 0–30 m
5 stars of 5, a handful of records in Galapagos Islands
Pygmy squid Idiosepius pygmaeus
Seagrass and weed in the shallows · 0–10 m
5 stars of 5, a handful of records in Lembeh Strait
Red handfish Thymichthys politus
Two small reefs off south-east Tasmania · 2–20 m
5 stars of 5, a handful of records in Australia
Ribboned seadragon Haliichthys taeniophorus
Weed, sponge and rubble · 3–25 m
5 stars of 5, a handful of records in Lembeh Strait
Rose-veiled fairy wrasse Cirrhilabrus finifenmaa
Mesophotic rubble slopes, below most recreational diving · 40–50 m
5 stars of 5, a handful of records in Maldives
Rough frogfish Antennatus tuberosus
Rubble and dead coral · 1–20 m
5 stars of 5, a handful of records in Lembeh Strait
Roughbar frogfish Fowlerichthys avalonis
Deep rubble, few records · 10–40 m
5 stars of 5, a handful of records in Galapagos Islands
Roughridge pipefish Cosmocampus banneri
Rubble, sponge and coral bases · 5–30 m
5 stars of 5, a handful of records in Lembeh Strait
Satomi's pygmy seahorse Hippocampus satomiae
Gorgonians and soft corals on slopes · 8–25 m
5 stars of 5, a handful of records in Lembeh Strait
Scythe butterflyfish Prognathodes falcifer
Deep rock walls and ledges · 30–40 m
5 stars of 5, a handful of records in Islas Revillagigedo
Slenderjaw moray Enchelycore octaviana
Deep rock crevices · 5–30 m
5 stars of 5, a handful of records in Islas Revillagigedo
Spotted handfish Brachionichthys hirsutus
Silt and shell in the Derwent estuary, Tasmania · 5–30 m
5 stars of 5, a handful of records in Australia
Tiger reef-eel Scuticaria tigrina
Deep in rock crevices · 3–25 m
5 stars of 5, a handful of records in Islas Revillagigedo
Umbrella slug Umbraculum umbraculum
Rubble and sand · 5–30 m
5 stars of 5, a handful of records in Lembeh Strait
Velvetfish Paraploactis kagoshimensis
Rubble and sponge on silt · 3–30 m
5 stars of 5, a handful of records in Lembeh Strait Caution Australian box jellyfish Chironex fleckeri
Northern Australia and the tropical Indo-Pacific
no record at a destination on this site Medical emergency Beaked sea snake Hydrophis schistosus
Indo-West Pacific
no record at a destination on this site Medical emergency Bearded fireworm Hermodice carunculata
Atlantic, Caribbean and Mediterranean
no record at a destination on this site Caution Bull shark Carcharhinus leucas
Warm seas worldwide, and rivers
no record at a destination on this site Medical emergency Geography cone Conus geographus
Indo-Pacific
no record at a destination on this site Medical emergency Great white shark Carcharodon carcharias
Cool and temperate seas worldwide
no record at a destination on this site Medical emergency Greater weever Trachinus draco
North-east Atlantic and Mediterranean
no record at a destination on this site Needs treatment Irukandji jellyfish Carukia barnesi
Northern Australia
no record at a destination on this site Medical emergency Lesser weever Echiichthys vipera
North-east Atlantic and Mediterranean
no record at a destination on this site Needs treatment Lion's mane jellyfish Cyanea capillata
Cold northern seas
no record at a destination on this site Caution Mauve stinger Pelagia noctiluca
Mediterranean and Atlantic
no record at a destination on this site Caution Portuguese man o' war Physalia physalis
Warm seas worldwide
no record at a destination on this site Needs treatment Red scorpionfish Scorpaena scrofa
Mediterranean and eastern Atlantic
no record at a destination on this site Needs treatment Saltwater crocodile Crocodylus porosus
Northern Australia to South-East Asia
no record at a destination on this site Medical emergency Textile cone Conus textile
Indo-Pacific
no record at a destination on this site Medical emergency Ratings are editorial estimates until enough dives are logged at a
location. Where a figure is calculated from logs, the species page says so. Habitat and
destination are published; individual dive sites are not.
