Amalthea.

That small jovian moon, not far from
Jupiter's Roche Limit, was in the news
recently.
It apparently has a density close to that of water-ice; but its surface is bone dry. JPL scientists say Amalthea is a "rubble pile" with a little subsurface ice.

It's surface is remarkably warm for its 5.2 a.u. distance from the sun.
It's clearly being tidally flexed, much like it's neighbour, "Io".
As a result [my theory is] I think what little subsurface ice that Amalthea has is really briny "slush", or a thick briny "goo"...
Water with a high saline content is still a liquid even if it has the viscosity of honey or tar.
And [my 'amateur' theory] is provable;
at least by calculations.
Example: The quantity of tidal-flexing energy that Amalthea is subjected to
is a known or knowable quantity.
And the mass of Amalthea is accurately
known, too.
So it stands to reason that the value of
of calories/gram that each gram of material on Amalthea receives by tidal-energy can be worked out too.
And [theoretical] 'slushy' saline water beneath Amalthea's surface?...Could it be another strange and hostile abode for microbial life forms in this cosmos?

Jacob