Thetis

In Greek mythology it is the name of two goddesses:

• Tetis, daughter of Uranus and Gea, wife of Ocean and mother of the Oceanid Ninphas.
• Tetis, the most famous of the Nereidas, the daughter of Nereo and Doris, the wife of Peleo and the mother of Achilles.

In astronomy, it can refer to:

• Tetis, a satellite from the planet Saturn.
• (17) ThetisAn asteroid from the asteroid belt.

In geology

• Sea of Tetis, an ocean that formerly extended from the Caribbean to the Indian Ocean.
• The Paleo-Tetis Ocean, the predecessor ocean of the previous one between the Ordovic and Triassic period.
• Ocean Proto-Tetis, the predecessor ocean of the former between the Ediacárico and Carboniferous period.
• Tetis Fosa, ocean pit in the northern part of the Tetis ocean.