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Golden Apple snail in a freshwater aquarium.

Helix pomatia, common names the Roman snail, Burgundy snail, or escargot.

Snail

Snail, close-up.

A snail on little stones

Cepaea hortensis Garden Banded Snail. Digitally Enhanced Photograph.

close up dry shell on the ground

A brown snail shell illuminated by the evening sun and photographed on a stone background with a macro lens, high resolution with copy space

A snail on a lichen rock. Blurred background.

Brown garden snail on white background

Close up of a Roman Snail (Helix pomatia) with vignette.

Close up of a snail on the ground

underwater snail

Snail, a lifeless snail shell in a garden in Brazil, selective focus.

Close up detail of a snail shell among the rocks of a forest between branches and leaves

Perpolita hammonis Land Snail. Digitally Enhanced Photograph.

A yellow snail in the palm of my right hand

A macro close-up of a snail in nature.

A large African snail Achatina from a shell crawls over sea stones on a light background. View from above

A snail in autumn.

grape snail crawls on the ground

Burgundy snail in the green grass

Mussel shell on the sand

A caucasian hand is holding a White-lip Globe Snail (Mesodon thyroidus--a terrestrial gastropod mollusk) in this Point of View image. There is copy space at the bottom of the image. One antenna is just starting to stick out.

A digital illustration of a golden snail shell on brown leaves

slug feeding savoy

Many species of gastropods have a more or less large outer shell: atrophied in slugs, it is large enough to shelter the whole animal in snails for example; it then constitutes protection against predators and drought. These shells, called univalves, have special features compared to the shells of other molluscs. They are optional or compulsory calcicole (limestone obtained in the plants on which they feed or by scraping the calcareous mineral substrates), more rarely calcifuge and in regions with non-calcareous soil can chew the shell of other individuals (case of parasitism), bone, eggshells. The shell is secreted by a thick fold of skin, called the mantle. It is mainly composed of calcium carbonate. Gastropods therefore need a diet rich in calcium.

Spring mood

Freshwater snail shell under water

a snail on a tree

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