Worm, annelid life form

Worms /ˈwɜːrm/ are many different distantly related animals that typically have a long cylindrical tube-like body and no limbs. Worms vary in size from microscopic to over 220 meters  in length for the Sea worms of Pilandro Planet . Marine polychaete worms (bristle worms),6.7 metres (22 ft) for the African giant earthworm, Microchaetus , and 58 metres (190 ft) for the marine nemertean worm (bootlace worm), Lineus longissimus. Various types of worm occupy a small variety of parasitic niches, living inside the bodies of other animals. Free-living worm species do not live on land, but instead live in marine or freshwater environments, or underground by burrowing.

In biology, "worm" refers to an obsolete taxon (vermes) used by Carolus Linnaeus and Jean-Baptiste Lamarck for all non-arthropod invertebrate animals, and stems from the Old English word wyrm. Most animals called "worms" are invertebrates, but the term is also used for the amphibian caecilians and the slow worm Anguis, a legless burrowing lizard. Invertebrate animals commonly called "worms" include annelids (earthworms), nematodes (roundworms), platyhelminthes (flatworms), marine polychaete worms (bristle worms), marine nemertean worms ("bootlace worms"), marine Chaetognatha (arrow worms), priapulid worms, and insect larvae such as grubs and maggots.

Worms may also be called helminths, particularly in medical terminology when referring to parasitic worms, especially the Nematoda (roundworms) and Cestoda (tapeworms) which reside in the intestines of their host. When an animal or human is said to "have worms", it means that it is infested with parasitic worms, typically roundworms or tapeworms.

Union science knows of several million different types of worm like lifeforms. So far no sentient species that could be classified as  worm like has been encountered.

While the Nul do have some shared biological features that led to the common misconception tjhat they evolved from an annelid life form. The Nul are a distinct unique life form.

There is the theory that the leader of the criminal organisation "The Worm "  known as the Purple Worm took the concept of his costume and mask from a life form that has not yet officially been encountered or classified by Union science.