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					Originally Posted by Gregstrom  
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					Originally Posted by chrispedersen  
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					Originally Posted by Redeyes  Water doesn't go below freezing (and ice floats, so the coldest "water" goes on top). |  Besides as a matter of physics in an ice/water mixture, both the water and the ice are at a temperature of 32 degrees. |  ...and 32 degrees is not _below_ freezing point.  By definition, water cannot have a temperature below its freezing point (although if you try extremely hard you can get it below zero centigrade/32 F.  Brine freezes at noticeably below zero anyway). | 
	
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water often has a temperature below its freezing point - if you think that its freezing point is 32 degrees.  The behavior of water varies markedly under pressure, and as I recall from highschool, I believe every 33 ft of water is 1 atm.  Ergo, water 2 miles down.. is under rougly 312 atmospheres of pressure.
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CR would be required to dwell on the ocean bottoms.  FR might be useful if the creature lived in or near vents.  CR > FR
This is magic, arguing which is more reasonable is a bit moot.  The author can do as he likes.  But, if a creature wasn't completely immune to cold, he would still be *AT* the vent.  Whats he doing here?