Home > Invertebrates > Shells > Worm Shells > Petaloconchus keenae

Updated 9/4/2025

Family Vermetidae

WEST PACIFIC / HAWAII

Petaloconchus keenae

Kane'ohe Bay, O'ahu, 3 feet

 

Kapoho tidepool, Hawaii

Kewalo Pipe, O'ahu, 20 feet

 

Puako, Hawaii, 40 feet

Ford Island, Pearl Harbor, O'ahu, 6 feet

 

Kane'ohe Bay, O'ahu, 4 feet

KEEN'S WORM SHELL

Abundant on hard surfaces at any depth.  Lightly sculptured with aperture directed upward.  Animal brown or purple with white marks, yellow mantle edge, operculum with a raised center.  Aperture diameter 5mm, extended length of 50mm.  Hawaii, Marshall Islands & Japan.