The Worms - Documentaries

Worms vary in size from microscopic to over 1 metre (3.3 ft) in length for aquatic polychaete worms (bristle worms), 6.7 metres (22 feet) for the African titan earthworm, Microchaetus, and 55 metres (180 feet) for the marine nemertean worm (bootlace worm), Lineus longissimus. Free-living worm species might live on land, in aquatic or freshwater atmospheres, or burrow.
In biology, "worm" describes an obsolete taxon (vermes) used 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, yet the term is additionally used for the amphibian caecilians and the slow worm Anguis, a legless burrowing reptile. Invertebrate animals commonly called "worms" include annelids (earthworms), nematodes (roundworms), platyhelminthes (flatworms), marine polychaete worms (bristle worms), aquatic nemertean worms ("bootlace worms"), aquatic Chaetognatha (arrow worms), priapulid worms, and insect larvae such as maggots and eats.
Worms might additionally be called helminths, particularly in medical terms when referring to parasitic worms, specifically the Nematoda (roundworms) and Cestoda (tapeworms) which live in the intestines of their host. When an animal or human, is said to "have worms", it implies that it is infested with parasitic worms, commonly roundworms or tapeworms.
Worms live in nearly all components of the world consisting of marine, freshwater, and terrestrial environments. Some worms living in the ground help to disorder the soil (e.g., annelids, aschelminths). There are worms that live in freshwater, salt water, and also on the seashore.