The Cassini-Huygens team concluded that the imaged features are almost certainly the long-sought hydrocarbon lakes, the first stable bodies of surface liquid found off Earth.

It is the only satellite with hydrocarbon lakes.

Cassini also proved, in July 2006, that Titan had hydrocarbon lakes, located near its north pole.

In March 2007, it discovered a large hydrocarbon lake the size of the Caspian Sea near its north pole.

More recently, the spacecraft's radar imager confirmed the existence of hydrocarbon lakes on Titan.

Oceans, seas, lakes, etc., can be composed of liquids other than water: e.g. the hydrocarbon lakes on Titan.

Its character as a hydrocarbon lake was confirmed by observations from the Cassini spacecraft, published in the 31 July 2008 edition of Nature.

What appear to be hydrocarbon lakes exist on Titan's surface.

Cassini's more recent fly-by of Titan offers radar images that strongly suggest hydrocarbon lakes exist near the colder polar regions.

It was identified as a hydrocarbon lake and confirmed by data from the Cassini spacecraft.