How does a snail build its shell? Detailed answer

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How does a snail build its shell? Detailed answer

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How does a snail build its shell?

Soft-bodied animals that have a shell are called mollusks. There are many types of shellfish. In some molluscs, the shell consists of two shells closed together. Such mollusks are called bivalves. This group includes edible marine mollusks (trazinka, venerka), oysters, scallops, bivalve shells. Another type of mollusk has a single-shell shell that can be coiled or cup-shaped. These mollusks are called snails. Snails build their shells like all other molluscs.

The shell is the skeleton of a mollusk, part of this animal. The mollusk is attached to the shell by muscles. The soft-bodied animal inside can never leave its shell. The mollusk grows larger, and the shell grows with it, becoming stronger and stronger. The shell is made of a certain type of limestone, and the mollusc builds it himself. Of course, the mollusk does not think about the fact that he is building a house for himself. The mollusk has special glands that absorb limestone from the water and deposit it in tiny particles in a circle and up. With the growth of the mollusk, his house becomes larger and stronger.

Some of the armored glands contain a dye. As a result, the shell may be colored, spotted or striped. Most mollusks live in the seas. None of the bivalves ever leave the water. And many snails breathe air. These creatures live in wet, forested areas. Scientists believe that there are over 80 species of snails.

Author: Likum A.

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