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Family Arcidae

INDO-PACIFIC / HAWAII

Arca 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 inches.  Hawaii & the Indo-Pacific.