Poseidon was similar to his brother Zeus in exerting his power on women and in objectifying masculinity. He had many love affairs and fathered numerous children. Poseidon once married a Nereid, Amphitrite, and produced Triton who was half-human and half-fish. He also impregnated the Gorgon Medusa to give birth to Chrysaor and Pegasus, the flying horse. The rape of Aethra by Poseidon resulted in the birth of Theseus; and he turned Caeneus into a man, at her request, after raping her. Another rape involved Amymone when she tried to escape from a satyr and Poseidon saved her. Other offspring of Poseidon include: Eumolpus, the Giant Sinis, Polyphemus, Orion, King Amycus, Proteus, Agenor and Belus from Europa, Pelias, and the King of Egypt, Busiris.
One of the most notorious love affairs of Poseidon involves his sister,