It appears that beneath the ice of Enceladus, a moon of Saturn, is an ocean with sand resting on its bottom and heat vents reaching 190 degrees. Life around the vents? Possibly. Cassini will get within thirty miles of Enceladus later this year.
http://www.npr.org/…/researchers-think-theres-a-warm-ocean-…
A new analysis of particles believed to be from the bottom of oceans inside Enceladus suggest the moon is toasty warm.
NPR.ORG
Prometheus Unbound 