He finds the later form, thalatth, to be related clearly to Greek Θάλαττα (thalatta) or Θάλασσα (thalassa), "sea". The Babylonian epic Enuma Elish is named for its incipit: "When above" the heavens did not yet exist nor the earth below, Apsu the freshwater ocean was there, "the first, the begetter", and Tiamat, the saltwater sea, "she who bore them all"; they were "mixing their waters". It is thought that female deities are older than male ones in Mesopotamia and Tiamat may have begun as part of the cult of Nammu, a female principle of a watery creative force, with equally strong connections to the underworld, which predates the appearance of Ea-Enki.[7]