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Family Cassididae

HAWAII

Cassis cornuta

38mm, Corsair, Oahu, 105 feet

Kewalo, Oahu, 90 feet

 

Kewalo, Oahu, 90 feet

 

Pokai Bay, Oahu, 15 feet

 

Kevin at Kewalo, Oahu

 

Mo at Kewalo Pipe, Oahu

 

Feeding on Urchin, Maui

 

Honokohau, Hawaii, 50 feet

HORNED HELMET

Locally common on sand at scuba depths.  Males have longer spines.  Adult shells typically eroded by boring sponge & outer lip stained green by algae.  Attains at least 12 inches.  Hawaii & the Indo-Pacific.