Also known as True Crab.
Found with a sponge cap on their heads that they have cut and shaped to fit, usually stationary during the day under their caps, out hunting for food at night over coral and rocky reefs.
They feed on detritus and invertebrates.
Length - 7cm
Depth - 0-360m
Widespread Western Atlantic, Caribbean
Brachyura crabs are considered true crabs, they have a short abdomen, 4 walking legs and a pair of clawed arms at the front.
Many thousands of species live worldwide in sea water, fresh water and on land. Ref: x