In Greek mythology, Tethys (/ˈtiːθɪs, ˈtɛθɪs/; Ancient Greek: Τηθύς, romanized: Tēthýs) was a Titan daughter of Uranus and Gaia, a sister and wife of the Titan Oceanus, and the mother of the river gods and the Oceanids. Although Tethys had no active role in Greek mythology and no established cults,[2] she was depicted in mosaics decorating baths, pools, and triclinia in the Greek East, particularly in Antioch and its suburbs, either alone or with Oceanus.