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Scallop shell
Scallop shell. The scallop is a part of the Pectinidae family of bivalve molluscs. It is contained within two shells connected by a hinge (not seen). The hinge is opened and closed by a single muscle and, if done rapidly, allows the scallop to swim. This technique can be used in defence, to move away from predators. Scallops are considered a delicacy.
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