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Updated 6/12/2021

Family Cassididae

Helmets

Helmets live in sand and feed upon sea urchins.

 

HAWAII - ENDEMIC

Casmaria kayae 

KAY'S HELMET

 

Semicassis umbilicata 

GROOVED HELMET

 

 

INDO-PACIFIC / HAWAII

Cassis cornuta

HORNED HELMET

 

Casmaria ponderosa

PONDEROUS HELMET

 

INDO-PACIFIC

Casmaria erinaceus

COMMON BONNET