clam

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clam Bivalve mollusc found mainly in marine waters. It is usually partly buried in sand or mud with the two parts of the shell slightly open for feeding. With a large foot for burrowing, its soft, flat body lies between two muscles for opening and closing the shells. A fleshy part called the mantle, lies next to the shells. Clams feed on plankton. Class Pelecypoda.

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