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Hard-shelled Clam or Quahog (Mercenaria mercenaria) These edible bivalves are characterized by a thick, oval shaped shell. These clams range in size from 4 inches (100mm) to 6 inches (150mm). The shell of young clams has raised ridges while older quahogs have smoother shells. These hard shelled clams can be found in the sand or muddy sand of the bay and along ocean beaches. Quahogs were used by Native Americans to make wampum. |