Why do snails crawl out of the trail, and why do the places where the snails crawl leave a white tra

Those white marks are actually mucus on the snail's body, the mucus is secreted from the snail's gastropod, the snail lives on land, and he needs a humid environment. When it doesn't rain, the snails hide in the shadow of stones or in the crevices of tree stumps all day long, and only come out at night. Early in the morning, the traces of slime left on the leaves tell us that the snails have been here.

After the rain, we can often find snails in the corners, under trees, in grass, and on vegetable leaves. The main food of snails is the stems and leaves of plants. If it's spring, it's possible to see several snails sticking to each other, and spring is the breeding season for snails.

In winter, the snail seals the opening of the shell tightly with a thin film formed by mucus and hides inside for the winter. The body of the snail is soft and has a spiral-shaped shell on the outside, right- or left-handed, with a mantle attached to the shell. The warm head has two pairs of antennae, the front pair is shorter; The back one is longer in contrast, and there is an eye at the top.

The ventral surface of the warm body is flattened and muscular, forming the gastropod, which is the locomotor organ of the snail. There are foot glands in the gastropod that secrete mucus, keeping the gastropod moist and avoiding injury while crawling. After the snail crawls over the walls, leaves, etc., it always leaves a clear trace, which is formed by the mucus secreted by the foot glands.

The mouth of the snail is on the ventral surface of the head, and the mouth has jaws and toothed tongues.

Why do snails leave marks when they crawl over? What exactly does it do?

Snails are gastropod mollusks that live on land. When crawling, it uses its feet to cling to other objects, and its foot muscles wriggle in waves, and crawl forward slowly. A snail's foot has a gland called a foot gland.

The foot glands produce a very mucus trace. When this mucus trail dries, it forms a sparkling saliva line.

During hibernation or summer hibernation, the mucus secreted by the foot glands forms a membrane at the mouth of the shell after drying up, which tightly seals the body and breaks through the membrane when the external environment is suitable. Snail specimens stored in the herbarium are protected by a thin film and can not die for several years.

It is mucus secreted by snails, which is white when dried.

The snail moves in a wavy shape, and the abdomen gives birth to a movable fleshy foot called gastropod, which is equivalent to the snail's foot. When the snail moves, mucus can be secreted under the gastropod, which reduces friction and helps it crawl. This slime dries quickly and shines as soon as it hits the air.

It is a mark left by a kind of mucus produced by the snail itself, which allows it to attach to the crawling surface and avoid falling off, or it may be a mark left by him, for himself and his companions! If it dries in time, it will leave a special smell!