Home > Invertebrates > Bivalves > Modiolus matris

Updated 8/20/2025

Family Modiolidae

CENTRAL PACIFIC / HAWAII

Modiolus matris

Kaupo, Oahu, Hawaii

 

MOTHER'S MUSSEL

Uncommon under stones in 15 to 30 feet.  Broadly rhomboidal, orange-brown to red with thin hairy periostracum.  Fine concentric growth rings.  Attains 1/2 inch.  Hawaiian and Phoenix Islands.