Home > Invertebrates > Bivalves > Lamarcka ventricosa

Updated 8/20/2025

Family Arcidae

INDO-PACIFIC / HAWAII

Lamarcka ventricosa

Kewalo Pipe, Oahu, 50 feet

 

Waimea Bay, Oahu, 30 feet

 

Byssus & scar, Lahilahi Cavern, Oahu, 60 feet

VENTRICOSE ARK

Abundant on vertical surfaces at scuba depths.  Snaps tightly to substrate when disturbed.  Attains 3.8 inches.  Red Sea to Hawaii and French Polynesia.  Formerly known as Arca ventricosa.