Lernean Hydra Legendary Ancient Greek Mythical Sea Creature
Lernean Hydra was a gigantic, nine-headed water-serpent, which haunted the swamps of Lerna. Herakles (Heracles) was sent to destroy her as one of his twelve labours, but for each of her heads that he decapitated, two more sprang forth. So with the help of Iolaos (Iolaus), he applied burning brands to the severed stumps, cauterizing the wounds and preventing the regeneration.