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Cowries and Relatives
Cowries and their relatives (Eratoidae, Cypraeidae, Ovulidae) are a group of related families of prosobranch mollusks in which an external shell is covered with the mantle when the animal is active. The mantle is often elaborately ornamented with papillae or tubercles. Like the velutinids, they may be distinguished from sea slugs by their cephalic tentacles that emerge from beneath the mantle and the bulbous eye spots at the bases of those tentacles. Cypraeids are herbivores while eratoids feed on colonial tunicates and ovulids on corals.

Representative Hawaiian species:
Monetaria moneta
Monetaria moneta
CP: Hekili Point, Maui;
Dec. 3, 2002
Erosaria helvola
Erosaria helvola
CP: Maalaea Bay, Maui;
Dec. 13, 2014
Luria isabella
Luria isabella
CP: Kapalua Bay, Maui;
March 28, 2004
Monetaria caputserpentis
Monetaria caputserpentis
CP: Hekili Point, Maui;
April 20, 2008
Purpuradusta fimbriata
Purpuradusta fimbriata
CP: Kapalua Bay, Maui;
Nov. 1999
Trivia edgari
Trivirostra edgari
CP: Maui;
Aug. 2002
For more information see:
 
Keoki Stender's cowrie page
 
Kwajalein cowries
 
Kwajalein Ovulidae
 
Eratoidae (Triviidae) on the Sea Slug Forum
 
Cypraeidae on the Sea Slug Forum
 
Ovulidae on the Sea Slug Forum
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