Seas have different ratios of methane to ethane
The liquid hydrocarbon seas that cover Saturn’s largest moon, Titan, may have different compositions, small waves and active tidal currents.
The landscape on Titan is characterised by large dune fields, flat plains and polar regions with large seas and lakes of liquid hydrocarbons. While exploration by the Cassini–Huygens space research mission has revealed much about the icy moon, many questions remain regarding the properties of its seas: Kraken, Ligeia and Punga Mare.