1. Caleb Tubbs and Madelyn Showalter
Cnidaria
Caleb Tubbs and Madelyn Showalter
This Photo by Unknown author is licensed under CC BY-SA.

2. Description Over 11,000 known species Found in aquatic biomes
Bodies consist of mesoglea a nonliving jelly structure
They are divided into two categories medusa and polyp.

3. Symmetry
Bilateral or Radial

4. Feeding
Carnivores
They are predators that feed on shrimp, amphipods, plankton and other small organisms
Trap animals with their tentacles
Nematocyst is a special cell containing barbed threat that is used for self-defense or catching prey.

5. circulation
Diffusion which allows glucose or amino acids through blocking proteins and starch
This Photo by Unknown author is licensed under CC BY-SA-NC.

6. Excretion
Canal like cavity for ingestion, digestion, and egestion

7. Response No brain or central nervous system
Have decentralized nerve nets that have sensory neurons

8. Polyp are sessile, which means they do not move
Polyp are sessile, which means they do not move. When they are young larva, they swim short distances in their environment.
Medusa move by jet propulsion using mesoglea to move forward through small bursts.
Tentacles help movement and are long appendages 
Movement

9. Reproduction
Males release sperm into the water, which then travels into the mouth of females
Reproduce sexually and asexually
Some contain one sex while other contain both sexes

10. respiration
Respiration occurs through organs such as the trachea, gills, or lungs.

11. examples Moon Jellyfish Horn Coral Scientific Name: Hydnophora rigida
Scientific Name: Aurelia aurita
They are 95% water
Horn Coral
Scientific Name: Hydnophora rigida
Went extinct 251 million years ago