The Seas of Titan (audio story)

 was the first story in the audio anthology Hidden Depths, produced by Big Finish Productions. It was written by Lizbeth Myles and featured Christopher Eccleston as the Ninth Doctor.

Publisher's summary
Out on Saturn's moon, Titan, an outpost all-but-forgotten by Earth struggles on against the odds.

As the Doctor joins explorers deep in the methane seas, they discover a hidden civilisation. But will the Sea Devils prove to be the colony’s salvation or its final destruction?

Plot
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Cast
to be added
 * The Doctor - Christopher Eccleston
 * Mirtar / Sea Devils - Nicholas Briggs

Continuity
to be added