Planarians are flatworms most known for being able to grow a new head if it gets cut off, but perhaps even stranger is the fact that their new head retains some of the memories from the old one.

With the basics regarding phylum Platyhelminthes covered, it's time to start digging into the clades within. Free-living flatworms were originally classified within the class Turbellaria. But more recently the clades needed to be...

This video provides an overview of the different phyla of worms, including flatworms, roundworms, and segmented worms. It explains their characteristics and habitats, such as the microscopic planarians found in water, the tube-like...