Tethys or Tethis may refer to: *

Tethys (database) Tethys is an online knowledge management system that provides the marine renewable energy (MRE) and wind energy communities with access to information and scientific literature on the environmental effects of devices. Named after the Greek titanes ...

, an online knowledge management system about the environmental effects of offshore renewable energy * ''Tethys'' (gastropod), genus of gastropods in the family Tethydidae *

Tethys (moon) Tethys (), or Saturn III, is the fifth-largest moon of Saturn, measuring about across. It was discovered by Giovanni Domenico Cassini in 1684, and is named after the titan Tethys of Greek mythology. Tethys has a low density of 0.98 g/cm ...

, a natural satellite of Saturn *

Tethys (mythology) In Greek mythology, Tethys (; ) was a Titans, Titan daughter of Uranus (mythology), Uranus and Gaia (mythology), Gaia, a sister and wife of the Titan Oceanus, and the mother of the River gods (Greek mythology), river gods and the Oceanids. Alth ...

, a Titaness in Greek mythology * ''Thetys'' (salp), a genus of gelatinous sea salp *

Tethys Ocean The Tethys Ocean ( ; ), also called the Tethys Sea or the Neo-Tethys, was a prehistoric ocean during much of the Mesozoic Era and early-mid Cenozoic Era. It was the predecessor to the modern Indian Ocean, the Mediterranean Sea, and the Eurasia ...

, a Mesozoic-era ocean between the continents of Gondwana and Laurasia *

Tethys Research Institute The Tethys Research Institute (official name: ''Istituto Tethys ONLUS'') is a non-profit research organisation founded in 1986 to support marine conservation through science and public awareness and by participating in the international conservat ...

, a non-governmental scientific organisation based in Italy * "Tethys", a song from ''

The Ocean of the Sky ''The Ocean of the Sky'' is an EP by American rock band the Used, released on July 9, 2013. It is available as a digital download and in compact disc format. A vinyl format was released in September 2013. It peaked at No. 20 on the alternative ...

'' by The Used * Tethys, the Japanese name for "Thetis", a boss character in ''

Mega Man ZX Advent is a 2007 action-platform game developed by Inti Creates and published by Capcom for the Nintendo DS. The game was first released in Japan on July 12, 2007; in North America on October 23, 2007; in Europe on February 29, 2008; and in Australia on ...

'' * Tethys River, an interplanetary waterway in Dan Simmons's ''

Hyperion Cantos The ''Hyperion Cantos'' is a series of science fiction novels by Dan Simmons. The title was originally used for the collection of the first pair of books in the series, '' Hyperion'' and '' The Fall of Hyperion'', and later came to refer to the ...

See also