De Haan's Sponge Crab

Found carrying detritus and sponges for camouflage on their rear legs, on mudflats, of coral and rocky reefs. They can have white or pink pincers.

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.