The Worms - Documentaries

Worms vary in dimension from tiny to over 1 metre (3.3 ft) in length for marine polychaete worms (bristle worms), 6.7 metres (22 ft) for the African titan earthworm, Microchaetus, and 55 metres (180 feet) for the aquatic nemertean worm (bootlace worm), Lineus longissimus. Free-living worm species could live on land, in freshwater or marine atmospheres, or burrow.
In biology, "worm" describes an outdated taxon (vermes) made use of by Carolus Linnaeus and Jean-Baptiste Lamarck for all non-arthropod invertebrate animals, and originates from the Old English word wyrm. Most animals called "worms" are invertebrates, but the term is likewise utilized for the amphibian caecilians and the slow-moving worm Anguis, a legless burrowing reptile. Invertebrate animals commonly called "worms" include annelids (earthworms), nematodes (roundworms), platyhelminthes (flatworms), marine polychaete worms (bristle worms), marine nemertean worms ("bootlace worms"), marine Chaetognatha (arrowhead worms), priapulid worms, and insect larvae such as eats and maggots.
Worms could additionally be called helminths, particularly in clinical terms when referring to parasitic worms, especially the Nematoda (roundworms) and Cestoda (tapeworms) which stay in the intestines of their host. When an animal or human, is said to "have worms", it suggests that it is ravaged with parasitic worms, commonly roundworms or tapeworms.
Worms live in mostly all parts of the world consisting of marine, freshwater, and terrestrial environments. Some worms staying in the ground help to condition the soil (e.g., annelids, aschelminths). Several grow as bloodsuckers of plants (e.g., aschelminths) and animals, including humans (e.g., platyhelminths, aschelminths). A number of various other worms might be free-living, or non parasitic.