Aquatic Hairy Triton, Monoplex aquatilis

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Updated 10/19/2025

Family Cymatiidae

CIRCUMTROPICAL / HAWAII

Monoplex aquatilis

Kane'ohe Bay, Oahu, 12 feet
Haleiwa Trench, Oahu, 25 feet



Haleiwa Trench, Oahu, 25 feet

AQUATIC HAIRY TRITON

Rare in Hawaii deeper than 10 feet, usually inhabited by a hermit crab. Aperture pale orange, columella lined orange & white, wider and more pale than Monoplex intermedius. Attains 4.7 inches, 120mm. Tropics worldwide. Formerly known as Cymatium aquatile.