Which Greek hero rescued Andromeda from a sea monster?

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Which Greek hero rescued Andromeda from a sea monster? Perseus rescued her from the sea monster Cetus.

Andromeda was the daughter of King Cepheus and Queen Cassiopeia of Aethiopia, a mythical kingdom in Greek literature. Cassiopeia claimed that Andromeda was more beautiful than the Nereids, sea nymphs associated with Poseidon. In response, Poseidon sent a flood and Cetus to ravage the land.

An oracle declared that the threat would end only if Andromeda were sacrificed. She was chained to a rock by the shore when Perseus arrived after defeating Medusa. In one version, he killed Cetus with a sword called a harpe; in another, he used Medusa’s severed head to turn the monster to stone.

Perseus then married Andromeda, despite her previous engagement to Phineus. This episode is often confused with Heracles’ battles against monsters or Bellerophon’s defeat of the Chimera, but neither hero rescued Andromeda.

Source: Wikipedia · fact-checked Sept. 2026

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