Technical Point of View

1. The top portion with circles is called conch head.
2. The circles on the conch head are called Sutures and can be from 3 to 8 in number.
3. The ridges in the conch cavity are called Pilae and can be from 2 to 5 in number.
4. The portion turning inwards is known as the Conch lip.
5. The curving back portion is called the Dorsal surface.
6. The narrow end portion is called conch tail.
7. The thick brown outer coating, also known as skin, in an un-cleaned Shankha is known as periostracum.