Pink and black flatworm


Flatworm Videos


  • Flatworms: The First Hunter


  • Flatworm Animation: Body Plan
  • Flatworm Animation: Tapeworm
  • Flatworm Animation: Reproduction


  • Flatworms: Reproduction
  • Flatworms: An Invasive Flatworm Hunts Earthworms

General Info

  • Image
    Book with pencil

Role in Ecosystem

  • Image
    Bee with arrows around it


  • Image
    Thermometer and waves

Human Interaction

  • Image
    Human next to globe


  • Image
    Skull of dinosaur
  • Image
    Lesson Plan
    Who Was "Hunter Eve?"
    The paleontological evidence of the first animal to hunt is tiny trails that have been fossilized in rocks. To start this lesson, students will consider the tracks and traces left by modern animals and what they can learn about an animal from its tracks. They then think about which animal might have been the first hunter. The class considers what it takes to be a hunter and what kind of evidence can we use to figure out what was the first hunter. Students write their ideas in their science notebooks and the teacher shares the ideas with the entire class.

    Full Lesson Plan

  • Image
    Red orange and pink flatworm
    Flatworms: An Ancient Body Plan
    Around 20,000 flatworm species today have the same basic body plan that appeared roughly 500 million years ago.

    Download Factsheet

  • Image
    Black and yellow flatworm
    Flatworms: Getting Ahead, An Explosion of Life
    When you collect marine animals, there are certain flatworms so delicate that they are almost impossible to capture whole, for they break and tatter under the touch. You must let them ooze and crawl of their own will onto a knife blade and then lift them gently into your bottle of seawater.

    Download Reading