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A few species of molluscs, including octopuses and cone snails, can sting or bite. Some present a serious risk to people handling them. However, deaths from jellyfish stings are ten times as common as those from mollusc bites. [43] Live cone snails can be dangerous to shell collectors, but are useful to neurology researchers. [44]
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 ...
Glaucus atlanticus is the blue sea slug shown here out of water on a beach, and thus collapsed; however, touching the animal directly with your skin can result in a painful sting, with symptoms similar to those caused by the Portuguese man o' war The slug in the water
The black slug is a voracious seedling predator. Terrestrial slugs are considered to be especially dangerous because they alter plant species abundance, adult plant fecundity, and the production of plant defensive compounds. Black slugs are of special concern in fragmented ecosystems and areas with high shrub and tree cover.
This class comprises snails and slugs from saltwater, freshwater, and from the land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, land snails and slugs. The class Gastropoda is a diverse and highly successful class of mollusks within the phylum Mollusca.
Glaucus is a genus of small blue pelagic sea slugs.They are aeolid nudibranchs, [1] ranging in size from 20 to 40 mm (0.79 to 1.57 in). [2] They feed on colonial cnidarians such as Portuguese man o' wars, blue buttons, and purple sails.
Yellow slugs, like the majority of other land slugs, use two pairs of tentacles on their heads to sense their environment. The upper pair, called optical tentacles, is used to sense light. The lower pair, oral tentacles, provide the slug's sense of smell. Both pairs can retract and extend themselves to avoid hazards, and, if lost to an accident ...
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]