Estivation

Estivation or aestivation (from Latinaestas, summer) is a state of dormancy similar to hibernation. Animals that estivate spend a summerinactive and insulated against heat to avoid the potentially harmful effects of the season. Some animals, including the California red-legged frog, may estivate to conserve energy when their food and water supply is low. Image:Australian-Lungfish.jpg Other animals that estivate include salamandersand lungfishes. The lungfish estivates by burying itself in the mud formed at the surface of a dried up lake. In this state, the lungfish can survive for many years. Other animals estivate in their burrow and wait for autumn to come.

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It uses material from the http://en.wikipedia.org/wiki/Estivation Wikipedia article Estivation.