The Dungeness crab, Metacarcinus magister, is a species of crab inhabiting eelgrass beds and water bottoms along the west coast of North America. It typically grows to 20 cm (7.9 in) across the carapace and is a popular seafood. Its common name comes from the port of Dungeness, Washington, United States, where it is "a prized crustacean that supports the most valuable fishery on the west coast."