Frozen Frogs

CC Image from Flicker

CC Image from Flicker

By: Katie E.
Frogs that freeze and come back to life? Rana Sylvatica, a wood frog in Alaska, has the ability to endure temperatures below –18ºC (—0.4ºF). Water drawn from the frog’s organs is transported to the abdomen, the lymphatic system, and under the skin where it freezes. The frog’s heart stops, it stops breathing, and the frog’s cells have to survive without oxygen intake. After temperatures rise, the wood frog thaws and its heart starts back up again. (Read more…)


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