Cnidaria; phylum of marine animals
Scientific taxonomic term for the phylum that includes jellyfish, corals, sea anemones, and hydras.
Jellyfish belong to the phylum Cnidaria.
Compound of 刺胞 (しほう, 'cnidocyte, stinging cell') + 動物 (どうぶつ, 'animal') + 門 (もん, 'phylum').