In Greek mythology, when Andromeda´s mother (queen Cassiopeia), boasts that her daughter is more beautiful than the Nereids (female spirits of the Aegean Sea), the angry Poseidon decides to punish the queen by sending to Aethiopia a monster.
To safeguard the kingdom, the Oracle of Apollo forces king Cepheus to offer her daughter to the monster (Cetus). Perseus saves and marries Andromeda.
