Cnidarians

Cnidarians also live in water. Animals in this group have a central opening surrounded by tentacles. They take in food and eliminate waste through this opening. Jellyfish, sea anemones, hydras, and corals are cnidarians.

Go to the discussion page to collaborate on your notes.

media type="custom" key="5812309"

media type="file" key="hydra catches water flea.mp4" Hydra is classified in the phylum cnidarians. This video, from youtube (http://www.youtube.com/watch?v=Kukv0AtIVdU&feature=related) shows a hydra catching prey