Thalassa ( ancient Greek Doric dialect and Modern Greek Θάλασσα Thalassa; ancient Greek Attic dialect - Θάλαττα Thalatta "sea" ) is in the Greek mythology the personification of the sea.
According to Hyginus Mythographus their parents Aether ( "ether" ) and Hemera are ( " day "). It corresponds mainly the (inner) Mediterranean in contrast to Pontos, the " high seas ", and Oceanus, the outer ocean. With Pontos she is the mother of the fish. In Nonnus she appears as the mother of Aphrodite, who received them from Uranus. You should also be the mother of Aigaion, the god of sea storms. According to Diodorus she is the mother of Telchines of Rhodes.