User blog comment:Xilinoc/Ch. 567 (Rukia be like "I ain't even scared though")/@comment-24099400-20140208051313/@comment-1387259-20140210163108

Below absolute zero (0K, -273.15°C, -459.67°F), may be possible, but no living thing ever discovered could survive at that temperature. Sure, you could freeze something to -300 Celsius, but doesn't mean it's going to be alive if it ever was.