Home > Invertebrates > Shells > Limpets > Megathura crenulata

Family Fissurellidae

CALIFORNIA

Megathura crenulata

Rock Quarry, Catalina, CA, 25 feet

GIANT KEYHOLE LIMPET

Locally common on rocky reefs.  Shell covered by mantle, color variable.  Attains 5 inches.  Northern California to Baja California.