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Oyster



Oyster, bivalve mollusk of shallow coastal waters. While other bivalves are able to move by means of a muscular “foot,” oysters have lost this foot, and the animal lives cemented to a hard substrate of rocks or shells. Like all bivalves, oysters feed by removing suspended organic particles from a current of water drawn into the shell. Edible oysters are extensively fished and cultivated worldwide. The pearl oyster is a tropical species.



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21st Century Webster's Family Encyclopedia21st Century Webster's Family Encyclopedia - Olympic Mountains to Palermo