Sharks have magnificent ways of eating. They eat fish, rays, sea lions, seals, clams, crabs, sea birds, squid, dead sharks, crustaceans, mollusks, marine mammals, and other sharks. Seizing their prey by cutting and crunching with their teeth, sharks are very good at what they do. Some sharks have baleen and they don't get big fish they get some very little fish off the bottom of the sea.