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Home > Invertebrates
> Shells > Moon Snails
> Mammilla simiae
Updated 8/26/2025
Family
Naticidae
INDO-PACIFIC / HAWAII
Mammilla
simiae
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Haleiwa Trench, Oahu, 50 feet |
Egg mass, Sharks Cove, Oahu, 35 feet
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Egg mass, Sharks Cove, Oahu, 35 feet
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Egg mass, Cargo Pier, Midway Atoll, 5 feet |
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SIMI'S MOON SNAIL
| Uncommon in sand at any depth. Shell light, with a variable
spirals of reddish brown flammules, an open umbilicus with some brown on
the columella, and thin red operculum. Attains 1.6 inches, 40 mm. Red Sea to Hawaii and the
Society Islands. Formerly known as Polinices simiae.
Polinices melanostomus has more brown on the columella, and the
umbilicus is partially covered by parietal callous. |
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