Home > Invertebrates > Bivalves > Septifer cumingii

Updated 8/20/2025

Family Mytilidae

INDO-PACIFIC / HAWAII

Septifer cumingii

Mokapu, Oahu, 130 feet

 

Makapu'u, Oahu, 20 feet

CUMING'S MUSSEL

Common under stones or in algal mat to 100 feet.  Slipper shaped, green, yellow, red, or brown.  Shell covered by thin hairy periostracum.  Attains 0.5 inch, 12 mm.  Red Sea to Hawaii and the Gambier Islands.  Formerly known as Septifer bryanae.