| Cancellaria, Cancellaria obesa, Cancellaria jayana, Merica, Scalptia|
Cancellaria cooperii, common name Cooper's nutmeg, is a species of medium-sized to large sea snail, a marine gastropod mollusk in the family Cancellariidae, the nutmeg snails.
Cancellaria cooperii Wikipedia
This species is an ectoparasite that parasitizes the Pacific electric ray, Torpedo californica, and perhaps other benthic fishes. Cooper's nutmeg is uncommonly found, offshore, on sandy substrate.
This nutmeg snail occurs in the Eastern Pacific Ocean from Monterey, California to San Benito Island, in central Baja California, Mexico.