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snail is walking in the grass, close-up shot

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

agate giant african land snail, Latin name Lissachatina fulica, on a stone against a green background

Golden Apple snail in a freshwater aquarium.

Close up image of a white shell with natural background.

Close-up on a seashell. Other images in: http://i227.photobucket.com/albums/dd10/sdeinobili/backgrounds.jpg

Slug creeping on the ground. Helix lucorum living in the forest. terrestrial pulmonate gastropod mollusk. Large snail with spherical shell

Unknown Helicid garden snail (observed in Southern California) on a cement background

one gray snail lies on the fingers on the hand on the street

Close-Up Of Shell Clam Against White Background.

Snail laying eggs, white egg

Snail, close-up.

A small Achatina snail sitting on a stump tilted its Brown sink. Mustache eyes touch grass. Snail in the natural nature.

Primer plano de un caracol pequeño

Macro shot of a brown snail shell, close-up

Spring mood

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.

Hard fresh clam on white background - stock photo.

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

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 large snail nestled comfortably in the man's palms and crawled out of the shell. High quality photo

Fresh and Raw Mussels Vongole

Closeup of a striped grove snail on the leaf

Macro of Escargot shells on slate background.

Close up of a snail on the ground

An underwater image of a Cinctura Iilium underwater in the ocean.

Freshwater snail shell under water

Fresh raw clams on white background studio shot.

Snail on the rock, macro shot

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