sentence: Scallops have a central adductor muscle.
sentences_after: The inside of their shell has a scar in the middle. This shows where this muscle attaches to the shell. The adductor muscle of scallops is larger and more developed than the adductor muscle of oysters. This is because they swim a lot. Some fishermen and scientists think that scallops migrate.
concept_name: scallop
headings: Scallop Description
categories: Bivalves