This document defines various technical terms related to seafood, including carotenoids, mollusks, gutting, entrails, and others. It then provides information on different types of round fish (those with cylindrical bodies) such as catfish, kingfish, mahi mahi, and salmon. It also covers flat fish that swim horizontally, including butterfish and halibut. Mollusks described are clams, mussels, octopus, oysters, scallops, and squid. Finally, it discusses various crustaceans like crabs, crayfish, lobster, and shrimp.