Definition of bivalve

Bivalves are a class of mollusks that have a two-part hinged shell, composed of two valves. They include species such as clams, oysters, and mussels, and are primarily aquatic, living in both marine and freshwater environments. Bivalves are characterized by their filter-feeding habits, using gills to extract food particles from the water. They play important ecological roles and contribute significantly to aquatic ecosystems.