Cnidaria
From Simple English Wikipedia, the free encyclopedia
Cnidaria | |||||||||
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![]() Sea nettles, Chrysaora quinquecirrha
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Scientific classification | |||||||||
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Anthozoa — coralsand sea anemones Scyphozoa — jellyfish Staurozoa — stalked jellyfish Cubozoa — sea wasps or box jellyfish Polypodiozoa Hydrozoa — hydroids, hydra-like animals |
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, ..)