Worms are many different distantly associated pets that typically have a long round tube-like body as well as no arm or legs.
Worms differ in size from tiny to over 1 metre (3.3 feet) in length for marine polychaete worms (bristle worms), 6.7 metres (22 ft) for the African giant earthworm, Microchaetus, and also 58 metres (190 feet) for the aquatic nemertean worm (bootlace worm), Lineus longissimus.
Various kinds of worm occupy a small variety of parasitical particular niches, living inside the bodies of various other pets.
Free-living worm varieties do not survive land, but instead live in aquatic or freshwater atmospheres, or underground by tunneling. In biology, “worm” describes an obsolete taxon, vermes, used by Carolus Linnaeus and Jean-Baptiste Lamarck for all non-arthropod invertebrate animals, currently seen to be paraphyletic.
Worms might also be called helminths, especially in clinical terms when referring to parasitical worms, specifically the Nematoda (roundworms) as well as Cestoda (tapeworms) which stay in the intestines of their host.
When a pet or human is claimed to “have worms”, it indicates that it is plagued with parasitical worms, generally roundworms or tapeworms. Lungworm is additionally an usual parasitical worm located in various animal species such as fish and also felines.