polyped

/ˈpɑlɪpɛd/
noun
  1. An animal with many feet or legs, especially a type of small aquatic invertebrate.
    • Under the microscope, the polyped looked like a tiny creature with dozens of legs.
    • The biology class studied a polyped to learn about multi-limbed locomotion.
    • The pond was full of tiny polypeds wriggling among the reeds.