Evergreen Natural History Database

Common name(s): Grant rock scallop, purple hinged-rock scallop

Size:
Up to 250mm

Range:
N. Alaska to S. California

Habitat:
Intertidal to 80 m. Found mainly on rocky substrates in deep water rarely found under boulders in the intertidal zone.

Misidentification:
Juveniles may be mistaken for Chlamys hastata or C. rubida.

Life History:
Free swimming as a juvenile, Hinnites giganteus , becomes permanently attached to the substrate as it matures. This species can live up to 20 years and, with the exception of Patinopecten caurinus (not described at this site), is the largest scallop species in the world. Free swimming as a juvenile, Crassadoma gigantea , becomes permanently attached to the substrate as it matures. This species can live up to 20 years and, with the exception of Patinopecten caurinus (not described at this site), is the largest scallop species in the world.

Synonyms: Crassodoma giganteum, Crassodoma gigantea

*"Size" refers to shell length only and only gives the largest average size for the given species.

Last updated Tuesday, August 29, 2006, by Lisa Ferrier