Bivalves are animals that have two shells. They are usually marine animals, which means that they live in the water.

  • The bivalves are a type of mollusk.

  • The bivalves are a type of marine animal.

Definition of bivalves


Any mollusc belonging to the taxonomic class Bivalvia, characterized by a shell consisting of two hinged sections, such as a scallop, clam, mussel or oyster.


A pericarp in which the seed case opens or splits into two parts or valves.

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