Greek Heroic Age of the founding narratives of various city-states. They also became the ancestors of later heroes. The Phoenician prince Cadmus, was the first Greek hero. The grandson of Poseidon (through his father Agenor), he founded Thebes Perseus, famous for his exploits well before the days of his great-grandson, Heracles, was the son of Zeus. Perseus beheaded the Medusa, saved Andromeda from the sea monster Cetus, and was the legendary founder of Mycenae. Aeacus was also a son of Zeus. Bellerophon was descended from the nymph, Orseis. Oenomaus, king of Pisa, in the Peloponnese, was the son of Ares. The excellence of
Sea monster Tropical cyclones such as hurricanes or typhoons may also be another possible origin of sea monsters. In 1892, Anthonie Cornelis Oudemans, then director of the Royal Zoological Gardens at The Hague saw the publication of his "The Great Sea Serpent", which suggested that many sea serpent reports were best accounted for as a previously unknown giant, long-necked pinniped. It is likely that many other reports of sea monsters are misinterpreted sightings of shark and whale carcasses (see below), floating kelp, logs or other flotsam such as abandoned rafts, canoes and fishing nets. Sea monster corpses have been reported since recent