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Home > Invertebrates
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> Helmets > Cassis cornuta
Updated 8/18/2025
Family Cassidae
INDO-WEST PACIFIC / HAWAII
Cassis cornuta
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Makua, Oahu, 160 feet,
115 mm
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Corsair, Oahu, 105 feet, 38 mm |
Kewalo, Oahu, 90 feet
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Kewalo, Oahu, 90 feet
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Pokai Bay, Oahu, 15 feet
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Kevin at Kewalo, Oahu
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Mo at Kewalo Pipe, Oahu
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Feeding on Urchin, Maui
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Honokohau, Hawaii, 50 feet
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Kailua Pier, Kona, 20 feet |
Kailua Pier, Kona, 20 feet |
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HORNED HELMET
| Locally common partially buried in sand deeper than 10 feet. Males have longer
spines than females. Adult shells are typically eroded by boring sponge
and the outer
lip is stained green by algae. The spire may be removed to create a
trumpet, but not by pre-contact Hawaiians. Attains at least 16.1 inches,
410 mm. East Africa to
Japan, Hawaii, and French Polynesia. |
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