Atlantic Bay Scallop
NameAtlantic Bay Scallop
Scientific NameArgopecten irradians
Common NameAtlantic Bay Scallop
FamilyPectinidae
GenusArgopecten
Speciesirradians
Geographic DistributionFound along the Atlantic coast of North America, ranging from Cape Cod, Massachusetts, south through Florida, and into the Gulf of Mexico.
Habitatintertidal
Shell Shapebivalve
Average Size (mm)60
Identifying FeaturesKey identifying features include its characteristic fan-like shape with numerous prominent radiating ribs, unequal valve convexity (right valve more convex), and well-developed auricles, with the anterior auricle of the right valve featuring a byssal notch. The color patterns, while variable, often include dark browns and grays on the exterior and a white interior.
Dietfilter-feeder
Raritycommon
Author Citation(Lamarck, 1819)
Description
The image displays two valves of an Atlantic Bay Scallop. The exterior valve is dark brown with prominent radiating ribs, exhibiting a somewhat mottled or banded pattern. The interior valve is glossy white, with a distinct yellowish-orange stain near the umbo and brown coloration along the ventral margin, mirroring the exterior ribs. A ruler indicates the shell's size, showing it to be approximately 5-6 cm in width.
