Definition
*Planaria* is the genus name for a group of free-living flatworms known for their regenerative abilities. These aquatic organisms, part of the Turbellaria class, can regrow entire bodies from small segments. They're characterized by a simple body plan with eyespots and a branched intestine. They inhabit freshwater environments and are popular in biological research due to their unique regenerative capacity. Imagine them as the superheroes of the worm world!