Dragons in Greek mythology in its place. It had an immortal head which would remain alive after it was cut off. Some accounts claim that the immortal head was made of gold. It lived in a swamp near Lerna and frequently terrorized the townsfolk until it was slain by Heracles, who cut the heads off, with the help of his nephew Iolaus, who then singed the oozing stump with a blazing firebrand to prevent any new heads from growing, as the second of his Twelve Labors. Hera sent a giant crab to distract Heracles, but he simply crushed it under his foot. Hera then
Greek ironclad Hydra heavy service with the Greek Navy. They participated in the Greco–Turkish War in 1897 until the Great Powers intervened and prevented the Greek Navy from capitalizing on their superiority over the Ottoman Navy. "Hydra" saw action in the First Balkan War at the Naval Battle of Elli and was present at the Naval Battle of Lemnos, but was too slow to actively engage the Ottoman forces. She did not see action during World War I, and was reduced to a gunnery training ship after the end of the war. She was ultimately broken up for scrap in 1929. In 1885,