Turbinella

Turbinella is a genus of very large sea snails with an operculum, marinegastropodmollusks in the subfamily Turbinellinae of the family Turbinellidae.

These species are sometimes known as "chanks" or "chank shells". One species in this genus is the sacred chank, Turbinella pyrum; see "Shankha" for the cultural and religious use of the shell of that species.