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Join our GroupMicroscopic animal
Called tardigrades, or water bears."There are about 750 species described. Tardigrades occur over the whole world, from the high Himalaya (above 6000 m) to the deep sea (below 4000 m) and from the polar regions to the equator.""The most convenient place to find tardigrades is on lichens and mosses. Other environments are dunes, beaches, soil and marine or freshwater sediments, where they may occur quite frequently (up to 25,000 animals/l).""Temperature--Tardigrades can survive being heated for a few minutes to 151 C or being chilled for days at -272.8 C (almost absolute zero). Radiation--Shown by Raul M. May from the University of Paris, Tardigrades can withstand 5700 grays or 570,000 rads of x-ray radiation. (Five grays or 500 rads would be fatal to a human). Pressure--They can withstand the extremely low pressure of a vacuum and also very high pressures, many times greater than atmospheric pressure. In theory, they could even survive the vacuum of space."(From wikipedia)
Date Added: Fri, 26 Oct 2007
Runtime: 0m:12s
Category: Pets & Animals
Channel: MySpace
Tags: animal, bear, microscopic, tardigrade
Related Tags: Animal, Water, Dog, Animals
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