Hydra, also called the Lernean Hydra, in Greek legend, the offspring of typhon and Echidna, a gigantic water snake like monster with nine heads, one of which was immortal. The monster's haunt was the marshnes of lerna, near Argos, from which he periodically emerged to harry the people and livestock of Lerna. Anyone who attempted to behead the Hydra found that as soon as one head was cut off, two more heads would emerge from the fresh wound........TO READ MORE ABOUT THIS CREATURE, BUY THE E BOOK NOW.