Antique Engraved Illustration Of The Hydra. Vintage Illustration Of The Hydra. Old Engraved Picture. Book Illustration Royalty-Free Cartoon

Antique engraved illustration of the hydra. Vintage illustration of the hydra. Old engraved picture. Book illustration published 1907. Hydra is a genus of small, freshwater organisms of the phylum Cnidaria and class Hydrozoa. They are native to the temperate and tropical regions. The genus was named by Linnaeus in 1758 after the Hydra, which was the many-headed beast defeated by Hercules 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.