title: Tethys
text: # Tethys
  
  Tethys or Tethis may refer to:
  
  * Tethys (database), an online knowledge management system about the environmental effects of offshore renewable energy
  * Tethys (gastropod), genus of gastropods in the family Tethydidae
  * Tethys (moon), a natural satellite of Saturn
  * Tethys (mythology), a Titaness in Greek mythology
  * Thetys (salp), a genus of gelatinous sea salp
  * Tethys Ocean, a Mesozoic-era ocean between the continents of Gondwana and Laurasia
  * Tethys Research Institute, a non-governmental scientific organisation based in Italy
  * "Tethys", a song from The Ocean of the Sky by The Used
  * Tethys, the Japanese name for "Thetis", a boss character in Mega Man ZX Advent
  * Tethys River, an interplanetary waterway in Dan Simmons's Hyperion Cantos
  