The shortest group in the index: the turtles and the sea snakes, and nothing else.
The two turtles are told apart at the head. The green turtle has a rounded beak and one pair of scales between the eyes, and eats seagrass and algae; the hawksbill has a hooked beak, two pairs of scales and a serrated rear shell edge, and eats sponge. Both are met resting under a ledge or feeding, and both are common across the region.
The two snakes are different animals doing different things. The banded sea krait hunts eels in the reef and comes ashore to digest and shed, which no true sea snake can do; it is highly venomous and entirely uninterested in divers. The olive sea snake cannot leave the water and is inquisitive, and it is the one that surprises people. Neither is a reason to get out of the water, and both are a reason not to handle anything.
Every one has a page. They are shown as a list rather than as pictures because nothing has been photographed or logged for them yet, and a species with nothing behind it should not sit in front of one that has.
How many of the 11 carry a record at each destination. A species usually carries several, so these do not add up to 11.
All 1316 species in one index, with filters for destination, rarity and hazard.