Clam shells on display at the National Museum of Natural History. Bivalves as a group have taken up a variety of living quarters and lifestyles. Besides "digging" or burrowing into the sediments at the bottom, bivalves bore into hard substances, permanently attach themselves to the substrate, and in some cases even swim, as they feed and protect themselves from predators. Shell shape and body form reflect the animal's "home life".Galleries:Molluscs, Shells, Smithsonian Museum of Natural HistoryKeywords:bivalve, district of columbia, museum of natural history, national museum of natural history, natural history, shell, shellfish, smithsonian, washington dcPhoto Location: National Museum of Natural History, Washington, DCPhotographer: Chad CullenDate of Photo: 06/26/2009Device Make: CanonDevice Model: Canon EOS 5DExposure Time: 1/250F Number: 28/10Original Dimensions: 2808×4211Picture Orientation: PortraitGPS Coordinates: 38°53'27.64"N 77°1'33.45"WPicture Number: 8132
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