Amphipods: flattened crustaceans, mostly a few millimetres long, and normally seen as movement rather than as an animal.
The skeleton shrimp is the one that gets photographed. It is a caprellid amphipod, holds on to a hydroid or a bryozoan with its back legs and reaches into the water with the front pair, and a colony of them on one hydroid moves as a group. The gammarid amphipods are the ones swarming in a torch beam at night.
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 2 carry a record at each destination. A species usually carries several, so these do not add up to 2.
All 1316 species in one index, with filters for destination, rarity and hazard.