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CNIDARIANS  

Definition

  • The name Cnidaria comes from the Greek word "cnidos", which means stinging nettle (i.e. nematocysts). This phylum contains thousands of living species worldwide. These creatures are radially symmetrical. There are four major groups of cnidarians: 1) Anthozoa, which includes true corals, anemones, and sea pens; 2) Cubozoa, the amazing box jellies with complex eyes and potent toxins; 3) Hydrozoa, the most diverse group with siphonophores, hydroids, fire corals, and many medusae; and 4) Scyphozoa, the true jellyfish. (en)

Broader concept

URI

https://gcmd.earthdata.nasa.gov/kms/concept/b6164a29-8e14-4861-a30c-fefce375e284

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