Nature
This caterpillar freezes solid every winter for seven years before becoming a moth
The Arctic woolly bear caterpillar lives so far north that its brief summers only give it enough time to feed, not to complete its life cycle. Each winter it produces its own antifreeze and survives temperatures near -70°C by freezing nearly solid, then thaws out and resumes feeding the following summer, repeating the cycle for up to seven years before finally pupating into a moth.