Flatworms are simple, soft-bodied invertebrates belonging to the phylum Platyhelminthes. They are known for their flat, ribbon-like shape and can be found in various environments, including freshwater, marine, and terrestrial habitats. Flatworms exhibit a range of lifestyles, from free-living species to parasitic forms that can inhabit the bodies of other animals. These organisms possess a unique body structure without a coelom, and many have remarkable regenerative abilities. Some well-known flatworms include Planarians, which are often studied for their regenerative properties, and Tapeworms, which are parasites that can live in the intestines of hosts, absorbing nutrients directly from their surroundings.