1. What are Cnidarians? Invertebrate animals that use stinging cells to capture food and defend themselves.

2. Cnidarians Body Structures Polyp - vaselike shape and usually adapted for a life attached to an underwater surface. Medusa - a bowl shape and adapted for a free-swimming life.

3. How cnidarians obtain food? A stinging cell containing a thread with spines is shot into prey. Some spines contain venom. When prey is helpless, cnidarians use tentacles to pull prey into their mouths.

5. Anemone eating http://www.youtube.com/watch?v=ctqvqES1PE8&feature=r elated http://www.youtube.com/watch?v=o1A5acWEERA&featur e=related

6. Clown fish and anemone http://www.youtube.com/watch?v=NtfQ3aIBpGY&feature =related http://www.youtube.com/watch?v=I089Tw7Fk_A&feature =related

7. How do cnidarians move? A nerve network, not nervous system, conducts signals from sensory cells to muscle cells allowing them to respond to danger and prey.

8. How do cnidarians move? Video

9. How do cnidarians move? video

10. How do cnidarians reproduce? Sexual – Some species have both sexes, some are male and female. Asexual – Polyps are asexual, some bud similarly to sponges some pull apart.

11. How do cnidarians reproduce? video

12. Reproduction http://www.youtube.com/watch?v=u8LGZaezpV8&feature =related

13. Medusa life cycle