Arca (bivalve)

Arca is a genus of edible saltwater clams in the family Arcidae, the Ark Clams.

Description
As is typical for ark clams, species in this genus have a long, straight hinge line. Some species in this genus, such as Arca zebra and Arca noae, have a brown-and-white striped pattern. Arca attach themselves to rock with byssal threads which protrude through a gap on the ventral (open) side.

Species
Species within the genus Arca include:


 * Arca acuminata Krauss, 1848
 * Arca angulata King & Broderip, 1832
 * Arca avellana Lamarck, 1819 - hazelnut ark
 * Arca boucardi Jousseaume, 1894 - Kobelt's ark
 * Arca bouvieri Fischer, 1874
 * Arca despecta Fischer, 1876
 * Arca imbricata Bruguière, 1789 - mossy ark
 * Arca kauaia (Dall, Bartsch & Rehder, 1938)
 * Arca koumaci Lutaenko & Maestrati, 2007
 * Arca maculata Sowerby
 * Arca mauia
 * Arca mutabilis (Sowerby I, 1833) - changeable ark
 * Arca navicularis Bruguière, 1789 - Indo-pacific ark
 * Arca noae Linnaeus, 1758 - Noah's ark
 * Arca ocellata Reeve, 1844
 * Arca pacifica (Sowerby I, 1833) - Panamic turkey wing
 * Arca patriarchalis Röding, 1798
 * Arca reticulata Gmelin, 1791
 * Arca tetragona Poli, 1795 - four-sided ark
 * Arca truncata Sowerby
 * Arca turbatrix Oliver & Cosel, 1993
 * Arca ventricosa Lamarck, 1819 - ventricose ark
 * Arca volucris Reeve, 1844
 * Arca zebra (Swainson, 1833) - Atlantic turkey wing