In ancient Greek mythology, Poseidon sent the sea monster Cetus down to terrorize the African coast after the Queen of Ethiopia favorably compared her own beauty to that of Poseidon's sea-nymphs. After the Ethiopian King consulted an oracle for help, he was instructed to sacrifice his beautiful daughter Andromeda to Cetus. Fortunately for the Ethiopians, the demigod Perseus slew Cetus, rescued Andromeda, and married her.