http://www.planetary.org/news/2008/0320_When_Titans_Winds_Blow_Mountains.html
Link: When Titan's Winds Blow, Mountains Move - Planetary News | The Planetary Society.
Many bodies in our solar system may contain oceans. Jupiter's ice-coated moons (Europa, Ganymede, and Callisto) probably contain internal saltwater oceans. The more distant large and medium-sized icy moons, the icy dwarf planets, and tiny Enceladus may contain colder ammonia-water oceans. Oceans in icy satellites could be a common feature throughout the universe, while Earth's surface ocean may be the more unusual case. These interior models were developed by many geophysicists from data about the sizes, densities, and orbital characteristics of each body. Credit: Doug Ellison, Emily Lakdawalla, and Bob Pappalardo
(((You know, that's a LOT of water. It's hard to believe there's nothing interesting going on in that much liquid water. And even *Pluto* with liquid water?
What, it's like teakettle hot down in there?)))
(((Titan's got so much liquid water that the moon's entire crust is visibly sloshing around on top of it.)))

(((Also: where is Earth's internal water layer? And what lives in there?)))