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A slug on a wall in Kanagawa, Japan.. Slug, or land slug, is a common name for any apparently shell-less terrestrial gastropod mollusc.The word slug is also often used as part of the common name of any gastropod mollusc that has no shell, a very reduced shell, or only a small internal shell, particularly sea slugs and semi-slugs (this is in contrast to the common name snail, which applies to ...
A few sea slugs are herbivores and some are carnivores. The carnivorous habit is due to specialisation. Many gastropods have distinct dietary preferences and regularly occur in close association with their food species. Some predatory carnivorous gastropods include: cone shells, Testacella, Daudebardia, turrids, ghost slugs and others.
Snails as a food date back to ancient times, with numerous cultures worldwide having traditions and practices that attest to their consumption. In the modern era snails are farmed, an industry known as heliciculture. The snails are collected after the rains and are put to "purge" (fasting).
Usually, the food is embedded in a string of mucus produced in the mouth, creating a coiled conical mass in the style sac. This action, rather than muscular peristalsis, is responsible for the movement of food through the gastropod digestive tract. [1] Two diverticular glands open into the stomach, and secrete enzymes that help to break down ...
The black slug is omnivorous, and its diet includes fungi, carrion, earthworms, leaves, stems, dead plant material and dung. The food is shredded into tiny pieces by the radula and is then digested by enzymes. [9] Like other terrestrial slugs, the black slug is a hermaphrodite, preferring to find a mate—often several—but can self-fertilize.
The Pacific banana slug is the second-largest species of terrestrial slug in the world, achieving a length of up to 25 centimetres (9.8 in) [6] and a weight of up to 115 grams (4.1 ounces). [7] The largest slug species is Limax cinereoniger, which can reach 30 centimetres (12 in) in length. Banana slugs have an average lifespan of 1–7 years. [5]
Haeckel (left), 1866 Sea snail shells, Kunstformen der Natur, 1904. Ernst Heinrich Philipp August Haeckel (February 16, 1834 – August 9, 1919), also written von Haeckel, was an eminent German biologist, naturalist, philosopher, physician, professor and artist who discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many ...
Elysia chlorotica (common name the eastern emerald elysia) is a small-to-medium-sized species of green sea slug, a marine opisthobranch gastropod mollusc.This sea slug superficially resembles a nudibranch, yet it does not belong to that clade.