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Snail shell on a white background

Snail

A closeup shot of a spiral white shell of a snail

Collection of snail shells on wooden table

fresh first quality fresh clams (Venerupis Pullastra) from Galicia (northtern Spain)

Preparing French Escargot Snails with Herb Butter

Primer plano de un caracol pequeño

little white snail on the green plant in the nature

Beautiful towns and natures in the south of Armenia

Conch shell

Shellfish,Japanese littleneck clam

Close-Up Of Shell Clam Against White Background.

Macro photography of brown snail shell on white background

French Escargot Snails with Herb Butter

Single snail house shell close up isolate against a white backdrop

Spring mood

Study of the structure of Freshwater molluscs, For study in laboratory.

Shell series: small shells in various colors

A closeup of a snail shell on rocks

Sea Shell Macro Shoot

Close up photo of white snail house, shell, sitting on a leaf, brown striped snail house

pile of live and fresh seashells on the tray on sale at the local wet market. pov

Colony of sea snails on a beach of Caribbean Sea at Cahuita National Park in Costa Rica.

A white clam laying on the ground

Hard fresh clam on white background - stock photo.

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.

Shell collection: shells in various colors

Macro shot of a spiral of a shell of a grape snail

a pile of sea snails with brown and white stripes on their shells. They are stacked together, displaying a variety of shapes and colors, highlighting their natural beauty

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