Poseidon is the Greek god of the sea. Son of Kronos and Rhea. Kronos swallowed him and his siblings, but their brother Zeus later rescued them. The brothers Zeus, Poseidon and Hades later divided the world among themselves, with Poseidon receiving dominion over the sea. His chief consort was Amphitrite. Poseidon is the father of Antaios, Orion and Polyphemos. Poseidon was secondarily a god of mariners (to whom he may send storms or a fair voyage), of waters in general, and of earthquakes. In the latter capacity he was known as Enosigaios or Enosichthon, meaning "earth-shaker". Athena defeated Poseidon in their famous contest for the allegiance of Athens. Elsewhere, he helped Apollo build the walls of Troy. However, he became an implacable enemy of Troy after Laomedon refused to pay him, and he sided with the Greeks in the Trojan War. Poseidon was closely associated with horses, and the horse was sacred to him. He fathered many famous horses, including the winged Pegasus by the Gorgon Medusa, and another winged horse, Areon, by Erinys. In Corinth, horse races were held in his honor. On Argos horses were sacrificed to him by drowning in a whirlpool. Poseidon was generally depicted as an older, bearded man carrying a trident (the three-pronged fisherman's spear). Freshwater springs were often consecrated to Poseidon as well.