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
Clash of the Titans (1981 film) continues on their journey without Andromeda and Ammon, who return to Joppa. On the Gorgon's island, Perseus fights and kills Medusa's guardian, a two-headed dog named Dioskilos. Perseus then enters the Gorgon's lair, where he uses the reflective underside of his shield to deceive Medusa, decapitate her, and collect her head; but the shield is dissolved by her caustic blood. As Perseus and his party set to return, Calibos enters their camp and punctures the cloak carrying Medusa's head, causing her blood to spill and produce three giant scorpions. Calibos and the scorpions attack and kill Perseus' remaining escorts, but