Cnidaria

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Cnidaria
Sea nettles, Chrysaora quinquecirrha
Sea nettles, Chrysaora quinquecirrha
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
(unranked) Radiata
Phylum: Cnidaria
Hatschek, 1888
Classes
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, ..)
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