Perseus and Andromeda (Leighton) daughters of Poseidon, the god of the sea. When the nymphs became aware of her claims, they protested to their father, who retaliated by calling up a sea monster called Cetus to patrol and wreak havoc along the coastline of Ethiopia placing Cassiope's kingdom at risk. In response the Queen, together with her husband Cepheus, decided to sacrifice her daughter, Princess Andromeda, to the monster. Andromeda was chained to a rock at the edge of the sea as an offering to the monster. Perseus was travelling back home on his winged horse, Pegasus, after battling with Medusa. He rescued Andromeda
Polydectes did slay the Gorgon Medusa, and as proof, he revealed her severed head. When Polydectes and his nobles gazed upon the prize, they were then turned to solid stone. In a version recorded by Hyginus, Polydectes attempted to treacherously kill Perseus in fear of his courage, but Perseus was just in time to expose the Gorgon's head before him. Perseus then handed the kingdom of Seriphos over to Dictys. In an alternate version followed by Hyginus, Polydectes married Danae as she was brought to him by Dictys, and had Perseus brought up in a temple of Athena. He did not