Tethys (mythology)

Ancient Greek mythological figure
Tethys is not to be confused with / is different from Thetis, the mother of Achilles.

Tethys is a Titan in Greek mythology. She is the titan of fresh water. Her parents are Gaia and Uranos. With her brother Okeanos her children are the river gods, the sea and spring nymphs, the Okeanids.