Leech that can survive extreme, extreme cold!

 
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Leech that can survive extreme, extreme cold!

Raifu
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https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0086807

This article talks about the extreme cold-tolerance of Ozobranchus jantseanus, a leech of freshwater turtles.

This leech can survive being frozen in liquid nitrogen (-320.8° F, or -196°C) for 24 hours. It can withstand  warmer ridiculously cold temperatures for many months! It can withstand repeated freezes and thaws, with similar temperatures, too.

leech_
Location: SW Idaho, USA
Climate: BSk
USDA hardiness zone: 6
Elevation: 2,260 feet
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