Any branchiopod crustacean of the suborders Cyclestherida, Laevicaudata, or Spinicaudata (of the disused superorder Conchostraca), covered by a bivalve shell and well adopted to live in temporary, shallow ponds, with many identified extinct and extant species used to date strata.

(simile) Very happy and carefree.

Atlantic jackknife clam, Ensis directus. / Razor shell, Ensis arcuatus, now Ensis magnus. / Atlantic razor clam, Siliqua costata. / Pacific razor clam, Siliqua patula.

plural of clam worm

A polychete worm, Nereis succinea.

plural of clam shrimp

Any of the small to large-sized edible saltwater clams in the family Arcidae.

A roadside restaurant that sells cooked clams as a snack.

plural of clam shack

A type of chowder made from clams and usually potatoes, with numerous variations.