Clams come shelled marine or even freshwater molluscs belonging to the class Bivalvia. A term "clam" has there are no taxonomic significance in biology, but is typically wont to refer to any lamellibranch (the shellfish whose person is protected by 2 proportionate husks) that is non an oyster, mussel, or the scallop, and that has the supplementary-or even-less ovoid shape. An exception is the razor clam, which has an elongate scale that suggests an old-outmoded straight razor. Clams could survive to become as much as 150 years old -- or even mayhap yearn (science suspects that a bit of big quahogs found off the East Coast of the Usa can be 200 years old).

Clams may be protective-shelled or even soft-shelled, based on data from a degree of calcification of their layers, based on data from coinage. It is eaten altogether, steamed, boiled, baked or even fried, over again (typically) based on data from metal money. Clam chowder is a popular soup in which clams figure strongly.

Examples of clams

The Hard clam or Northern Quahog: Mercenaria mercenaria The Soft clam: Mya arenaria The Surf clam: Spisula solidissima The Ocean quahog: Arctica islandica The Pacific razor clam: Siliqua patula The Giant clam: Tridacna gigas Asian or Asiatic clam: genus Corbicula Peppery furrow shell: Scrobicularia plana

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