In article .com,
Eric Sadoyama wrote:
Aha. Titan does have an underground ocean. Or at least, it *could* have
one, deep and cold and dark and maybe 15% ammonia. By comparison,
household ammonia cleaners are 5%-10% ammonia.
(http://news.bbc.co.uk/2/hi/science/nature/4196261.stm)


At least one paper I've read said that the subsurface ocean
would be somewhat acidic, although this would be no barrier to life
as we know it. The relative lack of energy inputs is the real limit
on life in that sea.

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