Home > Invertebrates > Shells > Worm Shells > Thylacodes variabilis

Updated 3/12/2025

Family Vermetidae

CENTRAL PACIFIC / HAWAII

Thylacodes variabilis

Kapoho Point, Kailua, Oahu

 

Makapu'u tidepool, Oahu

Sharks Cove, Oahu, 30 feet

 

Portlock tidepool, Oahu

Sharks Cove, Oahu 40 feet

Ma'alaea Bay, Maui


Sand Island, Oahu, 4 feet

Kikaua, Hawaii, 3 feet


Kikaua, Hawaii, 3 feet


Kuki'o tidepool, Hawaii


Kawaihae, Hawaii


Kahe Point, Oahu, 12 feet


Portlock, Oahu
   

VARIABLE WORM SNAIL

Common on hard surfaces at any depth.  Brown shell crossed by strong spirals & ribs.  Animal color variable, the only Hawaiian species lacking an operculum. Aperture diameter of 1/3 inch, length of 2 inches.  Hawaii, Line & Marshall Islands.  Formerly known as Serpulorbis variabilis.