Busycon perversum
Busycon perversum is an edible species of very large predatory sea snail or whelk, a marine gastropod mollusc in the family Busyconidae, the Busycon whelks.
This species has a left-handed or sinistral shell. It eats mostly bivalves.
Mounted in a handmade round brass base, make it a very desirable decor item, from Gulf of Mexico.