1. Cnidarians Jellies, Anemones, Corals
Dimorphism: Two body shapes during life cycle. (Polyp & Medusa)
Gastrovascular cavity
Primitive nerve net
Two distinct tissue layers: Epidermis & Gastrodermis
Cnidocyte (Stinging cells)
Radial Symmetry

2. Life cycle Reproduction :
Most cnidarians reproduce both sexually and asexually.

3. Classes of Cnidaria Scyphozoa (Cup Animals) Hydrozoa (Serpent Animals)
Anthozoa (Flower Animals)

4. Scyphozoa Scyphozoa True jellies
Medusa form during most of its life cycle.
Lions Mane is the most common in L.I.S.
Butter fish lives in its tentacles.

5. Sea Wasp Known as box jellyfish Most powerful venom in the world
Lives in Australia
Can be up to 60 meters in length

6. Hydrozoa Both body plans: polyp and medusa
Reproduce sexually as medusas.
Example: Portuguese Man Of War

7. Anthozoa
They are individual or colonies of polyps found in coastal waters.
No swimming medusa stage.
Examples: Sea anemones,Hard corals, sea fans

8. Sea fans

9. Hard corals

10. Phylum: Ctenophora Ctenophores Common name: Comb jellies
Contain eight rows of comb plates made of cilia used for locomotion.
Bioluminescent
No stinging cells
They feed on plankton

11. Comb Jellies

13. Candiru