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Cepaea nemoralis is highly polymorphic in shell colour and banding. The background colour of the shell varies along a continuum from brown through pink to yellow and sometimes almost white. [14] Additionally the shells can be with or without dark bands. The bands vary in intensity of colour, in width and in number, from zero to five.
The appearance of the shell is striking and has been compared to painted porcelain. [3] The background color of the shell is white or creamy-white, with thin bright spiral stripes. The stripes can be brown, black, pink, green, purple, or light yellow. A single shell can have stripes of a single color or as many as three different colors. [2]
Shells of two different species of sea snail: on the left is the normally sinistral (left-handed) shell of Neptunea angulata, on the right is the normally dextral (right-handed) shell of Neptunea despecta The shell of a large land snail (probably Helix pomatia) with parts broken off to show the interior structure. 1 – umbilicus
Shell of the common periwinkle. The shell is broadly ovate, thick, and sharply pointed except when eroded. The shell contains six to seven whorls with some fine threads and wrinkles. The color varies from grayish to gray-brown, often with dark spiral bands. The base of the columella is white. [3] The shell lacks an umbilicus. The white outer ...
Variability of the Painted snail. Shells of Polymita picta can reach a length of about 20 millimetres (0.79 in). These large shells are shiny and very brightly colored. Normally they show a bright yellow color with a white stripe, [according to whom?] but the species is well known for its colourful shell polymorphism, with numerous color vari
Theba pisana, common names the white garden snail, sand hill snail, white Italian snail, Mediterranean coastal snail, and simply just the Mediterranean snail, is an edible species of medium-sized, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicidae, the typical snails.
The white-lipped snail or garden banded snail, scientific name Cepaea hortensis, is a large species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Helicidae. The only other species in the genus is Cepaea nemoralis .
Shell: Snail shells are mainly composed of a mixture of proteins called conchin, and calcium carbonate. Conchin is the main component in the outer layer of the shell, known as the periostracum . The inner layers of the shell are composed of a network of calcium carbonate, conchin, and different mineral salts.