In Greek mythology, Kharybis or Charybdis (IPA: /kəˈrɪbdɨs/; in Greek, Χάρυβδις) was a sea monster, the daughter of Poseidon and Gaia. She takes form as a monstrous mouth and swallows huge amounts of water three times a day before belching them back out again, creating whirlpools. Charybdis was originally a naiad, sea-nymph who stole Heracles' cattle until Zeus became angry, threw her into the sea and, as punishment, turned her into a sea monster.