Tales of mermaids are nearly universal. Various cultures throughout the world have similar figures. The Aegean Sea, it seems, was full of such creatures like mermaids. A popular Greek legend has Alexander the Great's sister, Thessalonike, turn into a mermaid after her death. She lived, it was said, in the Aegean and when sailors would encounter her, she would ask them only one question: "Is Alexander the king alive?", to which the correct answer would be "He lives and still rules". Any other answer would spur her into a rage, where she transformed into a Gorgon and meant doom for the ship and every sailor onboard.