All mollusks build their own shells, whether they live in water or on land. Creatures like snails, clams, oysters and mussels use an organ called a mantle to secrete layers of calcium carbonate ...

Through a structure called a “radula” in their ... As the snail grows, the shell grows too. The snail shell is an integral part of the creature and essential for its survival.

Tami Gingrich explores the characteristics of common slug and snails in Ohio, highlighting their benefits for wildlife and ...