The Abalone (Haliotis) is a sea snail. It is a marine (saltwater) gastropod mollusc. It is also known as the Sea Ear, Ear Shell, Muttonfish, and Ormer. It is a haliotid. 

The Abalone has a hard, convex, rounded or oval-shaped shell called an exoskeleton made out of nacre (mother of pearl). The shell can be domed or flat and it is usually greyish in colour. The inside of the shell is iridescent blue-green. It has a row of holes in its mantle, which enable it to breathe and expel water. About 4-10 holes are open. It has a rounded foot.