Sea cucumbers. Slow, soft and mostly ignored, and one of the most productive things on a dive to search: a large share of the commensal shrimps and crabs in this index are on one.
Graeffe's sea cucumber is where most emperor shrimps are found, and the sea cucumber crab and the sea cucumber scale worm are named for where they live. The synaptid sea cucumbers, up to three metres of soft body, hold their own commensal shrimp and drape themselves over rubble after dark.
Handling damages them. The warty sea cucumber breaks down if it is picked up, and several species eject sticky white threads when they are disturbed, which is a defence rather than a display and leaves the animal to rebuild what it has lost.
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 12 carry a record at each destination. A species usually carries several, so these do not add up to 12.
All 1316 species in one index, with filters for destination, rarity and hazard.
