Home > Invertebrates > Shells > Whelks > Sinetectula carduus

Updated 2/14/2026

Family Pisaniidae

INDO-WEST PACIFIC / HAWAII

Sinetectula carduus



Kewalo, Oahu, 90 feet, 20 mm

GRAIN WHELK

Uncommon under dead coral deeper than 200 feet.  Attains 1 inch, 25 mm.  East Africa to Hawaii and the Tuamotus.  Formerly known as Cantharus farinosus.