Conch

Shell or sea snails

Conch (US: KONK, KONCH, UK: KONCH) is any of a number of different medium-to-large-sized sea snails. Conch shells typically have a high spire and a noticeable siphonal canal (in other words, the shell comes to a noticeable point on both ends). Conches that are sometimes referred to as "true conches" are marine gastropods in the family Strombidae, specifically in the genus Strombus and other closely related genera.

From Wikipedia, under CC BY-SA. More on occurri.