Crabs include hermit crabs, and coconut crabs. Freshwater crustaceans include freshwater crabs and crayfish. They eat molts of lobsters, hermit crabs, and carrion of any kind. He prohibited boiling of lobsters and crabs. The Reptantia or walkers included the crabs and lobsters. Most fishermen catch and sell crabs and oysters. Some oysters contain crabs, known as oyster crabs. The Chesapeake Bay is host to many species, including blue crabs, clams, oysters, and rockfish. The shells of sea snails are used for protection by many kinds of hermit crabs. Some of the major harvests are shrimp, fish, crabs, and lobster. They are known to eat fish, frogs, rodents, birds, crabs, and snakes. The latter is particularly common for larger crabs, such as the snow crab. They include jellyfish, molluscs, prawns, crabs, etc. European seabass are known to feed on prawns, crabs and small fish. Live food often includes crabs and small fish.