Answer:
As an infant he was cast into the sea in a chest with his mother by Acrisius, to whom it had been prophesied that he would be killed by his grandson.
After Perseus had grown up on the island of Seriphus, where the chest had grounded, King Polydectes of Seriphus, who desired Danaë, tricked Perseus into promising to obtain the head of Medusa, the only mortal among the Gorgons.
Aided by Hermes and Athena, Perseus pressed the Graiae, sisters of the Gorgons, into helping him by seizing the one eye and one tooth that the sisters shared and not returning them until they provided him with winged sandals (which enabled him to fly), the cap of Hades (which conferred invisibility), a curved sword, or sickle, to decapitate Medusa, and a bag in which to conceal the head.
According to another version, the Graiae merely directed him to the Stygian Nymphs, who told him where to find the Gorgons and gave him the bag, sandals, and helmet; Hermes gave him the sword.)
Step-by-step explanation:
Graiae in English translation: "old women", "grey ones", or "grey witches
16th Century Italian Sculpture Benvenuto Cellini’s bronze statue in Florence of Perseus with Medusa’s head is especially famous.) The chief characters in the Perseus legend, Perseus, Cepheus, Cassiopeia, Andromeda, and the sea monster (Cetus), all figure in the night sky as constellations.