Question: what are types of shellfish?
Answer: Types of Shellfish They can be divided into two groups: crustaceans and mollusks. Crustaceans include shrimp, crayfish, crab, and lobster, while clams, scallops, oysters, and mussels are examples of mollusks (1). Most shellfish live in saltwater, but the name also refers to species found in freshwater.