What is the coldest habitat?

Answer 1

Depends on what you mean by animal. I think Earthworms (which belong to the kingdom of animalia) are a possible candidate. As I've understood it, the common earthworm Lampito can tolerate body temperatures of about 17 Celsius, while the commercial earthworm Perionyx can tolerate body temperatures of about 9 Celsius. Source: http://jeb.biologists.org/cgi/content/abstract/59/3/655 I'm currently searching myself what the lowest temperature a mammal can tolerate is. Edit: it turns out the lowest NORMAL body temperature of any mammal is that of the giant anteater. It also has the greatest variation of normal body temperature, from 33 to 36 C.

The tardigrades or water bears belong to the kingdom animalia and can go in cryostasis. Some can tolerate temperatures very close to the absolute zero, -273 C, temperatures which on earth can only be achieved in the laboratory. However, tardigrades in cryostasis aren't functioning normally. In fact, it's arguable if they're technically alive. Through hypercapnia and hypoxia, nine cats survived to temperatures as low as 12,5 degrees, though this was in the laboratory. Source: http://ajplegacy.physiology.org/cgi/content/abstract/196/2/354

Answer 2

The coldest habitat on Earth is the polar regions, such as the Arctic and Antarctica. These areas experience extremely low temperatures, with the coldest recorded temperatures typically found in Antarctica. The harsh conditions in these habitats make them challenging environments for most forms of life.

Answer 3

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Answer 4

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