You may be planning to wear a costume at Halloween, but many marine animals wear disguises throughout the year. Several types of crabs change their appearance to give them greater protection.
Hermit crabs live in empty shells to protect their tender backsides.
A hermit crab may change its shell when it finds a more attractive or better-fitting one. Some hermit crabs put anemones on their shells. One small Xanthid crab carries sea anemones around in its claws. When frightened, it waves the anemones like boxing gloves to ward off predators. Sponge crabs carry sponges to camouflage themselves.