Butter Clam
NameButter Clam
Scientific NameSaxidomus giganteus
Common NameButter Clam
FamilyVeneridae
GenusSaxidomus
Speciesgiganteus
Geographic DistributionEastern Pacific Ocean, ranging from the Aleutian Islands of Alaska south to Baja California, Mexico. Most abundant in the Pacific Northwest (British Columbia, Washington, Oregon).
Habitatintertidal
Average Size (mm)Typically ranges from 70-100 mm, but can grow up to 150 mm (6 inches) in length.
Identifying FeaturesKey features include its thick, heavy shell, prominent and regular concentric growth lines, oval to subquadrate shape, and a strong hinge with three cardinal teeth in each valve. The umbo (beak) is often eroded and dark.
Dietfilter-feeder
Raritycommon
Author CitationSaxidomus giganteus (Deshayes, 1839)
Description
A robust, thick-shelled bivalve mollusk characterized by its oval to subquadrate shape and prominent, regular concentric growth lines (lamellae) on the exterior. It is a commercially important species in its native range.
