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 destroyer Hydra Greek destroyer Hydra Hydra () was a Greek destroyer of the "Dardo" class, which served with the Hellenic Navy during the early stages of the Second World War. It was named after the Saronic Gulf island of Hydra, which played an important role in the Greek War of Independence, and was the fourth ship to bear this name. She was constructed in Sestri Ponente, Italy, by Cantieri Odero, and commissioned by the Hellenic Navy in 1933. After the outbreak of the Greco-Italian War, she participated in the first naval raid against Italian shipping in the Strait of Otranto (14–15 November