Also known as Eyes-wide-apart Swimming Crab, Portunid Crab, Swimmer Crab, Swimming Crab, True Crab.
Found on rock and sandy bottoms, of coral and rocky intertidal reefs.
They feed on bivalves.
Length - 3.8cm
Depth - 0-120m
Widespread - Indo-Pacific
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: http://www.sealifebase.org/summary/Thalamita-admete.html