Where does the pea crab live?

Pea crabs live on or in other marine animals, such as bivalves, sea urchins, and sea cucumbers. They are small, pea-sized crustaceans that feed on their host's food scraps. Some species of pea crabs are commensal, meaning that they live in close association with their host without harming it, while others are parasitic, meaning that they harm or even kill their host. Pea crabs are found in all oceans except for the Arctic.