Thálassi is the Theosi god of salt-water oceans and seas.
He resides in Helmi, a spherical palace made from a giant pearl that traverses beneath the ocean seas as well as the seas of the skies as Lunaal, the gray the moon. He rules there with his wife, Révma, goddess of freshwater lakes, rivers, streams, and springs. His three adult children also live there: Psarás, god for those who make their living from the sea (sailors, fishermen, sea traders, and those who specialize in naval combat); Eidýllia, the goddess of love and romance and her adult son, Fýlo, god of lust and sex, but also of music and the arts; and Polemistís, the Warrior, god of individual combat.