Home > Invertebrates > Shells > Horns > Bittium impendens

Updated 10/14/2025

Family Cerithiidae

INDO-WEST PACIFIC / HAWAII

Bittium impendens



Makapu'u, Oahu, 2 feet

IMPENDING HORN

Uncommon on shallow reefs and tidepools.  Light tan or purple with fine granulose spirals.  Attains 0.3 inches, 6 mm.  South Africa to Hawaii and Pitcairn.