Hydra (genus)
Genus of cnidarians / From Wikipedia, the free encyclopedia
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Hydra (/ˈhaɪdrə/ HY-drə) is a genus of small freshwater organisms of the phylum Cnidaria and class Hydrozoa. They are native to the temperate and tropical regions.[2][3] The genus was named by Linnaeus in 1758 after the Hydra, which was the many-headed beast defeated by Heracles, as when the animal had a part severed, it would regenerate much like the hydra’s heads. Biologists are especially interested in Hydra because of their regenerative ability; they do not appear to die of old age, or to age at all.
| Hydra | |
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| Hydra budding | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Cnidaria |
| Class: | Hydrozoa |
| Order: | Anthoathecata |
| Family: | Hydridae Dana, 1846 |
| Genus: | Hydra Linnaeus, 1758[1] |
| Species[1] | |
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