Two-spotted Keyhole Limpet
NameTwo-spotted Keyhole Limpet
Scientific NameFissurella bimaculata
Common NameTwo-spotted Keyhole Limpet
FamilyFissurellidae
GenusFissurella
Speciesbimaculata
Geographic DistributionEastern Pacific Ocean, specifically along the coast of North America from California to Baja California.
Habitatintertidal
Shell Shapeconical
Average Size (mm)Typically ranges from 20 to 30 mm in length.
Identifying FeaturesKey identifying features include the characteristic apical keyhole opening, the low conical shell shape, and the extensive, often spotted, yellowish-tan mantle that largely covers the shell.
Raritycommon
Author CitationDall, 1871
Description
A species of marine gastropod mollusc belonging to the family Fissurellidae. It is characterized by its low, oval, conical shell with a distinctive apical opening (keyhole). The living animal's fleshy mantle is typically extensive, often covering most of the shell, and can be yellowish-tan with numerous small dark spots or papillae. It is commonly found in intertidal and subtidal rocky habitats.
