👉 Renicolids are a group of small, round-shaped worm-like organisms that belong to the class Nematoda and are closely related to nematodes, which are known for their parasitic life cycle involving crawling on host cells. These worms have a broad range of adaptations, including the ability to grow in various environments like soil and aquatic habitats, as well as being able to digest a variety of foods, including plant matter.