the Chesapeake blue crab

Callinectes sapidus (from the Greek calli- = "beautiful", nectes = "swimmer", and Latin sapidus = "savory"), the Chesapeake blue crab or Atlantic blue crab, or simply blue crab, is a species of crab native to the waters of the western Atlantic Ocean, the Pacific coast of Central America and the Gulf of Mexico, and introduced internationally.
C. sapidus is of significant culinary and economic importance in the United States, particularly in the Chesapeake Bay. It is the Maryland state crustacean and the subject of an extensive fishery.[2] On the Pacific coast of Central America it is largely ignored as a food source as picking the meat is considered too difficult. -Wikipedia