Cnidaria
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| Cnidaria | ||||||||
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 Sea nettles, Chrysaora quinquecirrha
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Anthozoa — corals and sea anemones |
Cnidaria is a phylum with about 11,000 species of animals. All of them are very simple. All of them live in the water, most of them in the sea.
Cnidaria have their name from special cells which have organelles that sting.
There are four main classes in the group
- Class Anthozoa (Sea anemones, corals,..)
- Class Scypozoa (Jellyfish)
- Class Cubozoa (Box jellies)
- Class Hydrozoa (Obelia, Aeqorea,Portuguese Man o'War, ..)
They can reproduce by budding, a type of reproduction without sex.
