FISHES MOLLUSCS –
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Bivalves are a class of mollusks, like clams, oysters, mussels, scallops, and cockles, characterized by their two-part hinged shell (valves) that encloses a soft body, and they are essential aquatic filter feeders, cleaning water and serving as food/habitat, though some burrow while others attach or swim, lacking a distinct head and rasping tongue (radula).
