if you mean the shell.... it is made of calcium, it grows with the snail and gains whorls (the spirals) ..............similar to a tree, the more spirals the older the snail.
snail lug
snail lug
a shell
Shell
The covering for the opening of a snail's shell is called the "operculum." This hard structure acts as a protective door that can close the opening of the shell when the snail retracts its body, helping to prevent desiccation and protect against predators. Not all snails have an operculum; it is more commonly found in certain types of aquatic and terrestrial snails.
they have same outer covering
Turtle,snail,crab and shellfish.
a snail has a bilteral body system.
It depends on the classification of vertebrate.Mammals have a body covering of fur, skin or hair.Birds have a body covering of feathers.Reptiles have a body covering of scaly skin.Fish have a body covering of scales.Amphibians have a body covering of moist skin.
The body covering is molt I don't know what it is
Wallabies have a body covering of fur.
The body covering is fur.