''Chlamys swifti'', common name Swift's scallop, is a species of

bivalve Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs that have laterally compressed bodies enclosed by a shell consisting of two hinged parts. As a group, bival ...

mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Pectinidae.

Description

''Chlamys swifti'' has a shell reaching a size of , with a maximum of . The shell is fan-shaped and it is composed of two valves, each of which is convex and has a few broad ribs. These radiate from the umbone, the rounded protuberance near the hinge. Beside the hinge are two irregular shell flaps or auricles with the anterior one normally being much larger than the other. This provides an attachment for the single strong adductor muscle that closes the shell. The background colour varies from pale brown to pale purple. These scallops can live up to 13 years. They are filter feeders, sieving microscopic algae from water that passes through its gills.

Distribution and habitat

This species is native to the southern coasts of the Sea of Japan, in Western

Sakhalin Sakhalin ( rus, Сахали́н, r=Sakhalín, p=səxɐˈlʲin; ja, 樺太 ''Karafuto''; zh, c=, p=Kùyèdǎo, s=库页岛, t=庫頁島; Manchu: ᠰᠠᡥᠠᠯᡳᠶᠠᠨ, ''Sahaliyan''; Orok: Бугата на̄, ''Bugata nā''; Nivkh: ...

Hokkaido is Japan's second largest island and comprises the largest and northernmost prefecture, making up its own region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by the undersea railway Seikan Tunnel. The la ...

and

Honshu Island , historically called , is the largest and most populous island of Japan. It is located south of Hokkaidō across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyūshū across the Kanmon Straits. The island sep ...

. This low-boreal species lives attached by a byssus under rocks. It prefers shallow near-bottom waters in intertidal areas at depths of .

References

Biolib
*Sandra E. Shumway,Jay G.J. Parson
Scallops: Biology, Ecology and Aquaculture: Biology, Ecology and Aquaculture
Bivalves described in 1858 swifti {{Pectinidae-stub