Flatworms are simple, soft-bodied invertebrates belonging to the phylum Platyhelminthes. They are characterized by their flattened bodies, which can range in size from a few millimeters to several meters long. Flatworms can be found in various environments, including freshwater, marine, and terrestrial habitats. They exhibit bilateral symmetry and have a simple body structure without a true body cavity. There are three main classes of flatworms: Turbellaria (free-living flatworms), Trematoda (parasitic flukes), and Cestoda (tapeworms). Many flatworms are known for their regenerative abilities, allowing them to regrow lost body parts. They possess a simple nervous system and lack specialized respiratory and circulatory