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Extremophiles: Water Bears
Transcript
Physical Features
- Vertebrates, bilaterally symmetrical
- Length can be up to 0.5mm when fully grown
- They have 6-8 stubby legs
What they have taught us about life in space.
Evolutionarily, water bears have become resistant to the effects of drying up, researchers are attempting to find other hardy life forms on Earth that may be used to develop techniques on safely living in space or other harsh environments
Environment
- Though they can live in any habitat, they choose to live in mosses, lichens, and freshwater locations
- They have been found in such varying locations as the Himalayas to the Marianas trench.
- They can withstand pretty much any environment, but do not seek them out.
Tardigrades
Works Cited
Cryobiosis
- Thought to be the toughest creature on Earth
- They can survive in outer space unprotected
- Tardigrade-"slow walker"
- Also known as water bears or moss piglets
- Are found in nearly every habitat on Earth
- Survived all 5 mass extinctions on Earth
The reason tardigrades can survive such extreme conditions is the process called Cryobiosis wherein the animal can halt its metabolic processes. They can live like this for a decade and still be revived to its natural state.
- Also called anhydrobiosis
- "Absurd Creature of the Week: The Incredible Critter That’s Tough Enough to Survive in Space | Science | WIRED." Wired.com. Conde Nast Digital, 9 Mar. 0014. Web. 8 May 2014.
- "Tardigrade Facts." Tardigrade Facts. N.p., n.d. Web. 8 May 2014.
- "Tardigrade: Hardiest Critter on Earth." SciLogscom. N.p., n.d. Web. 9 May 2014.
- "Tardigrades !" Tardigrades ! N.p., n.d. Web. 9 May 2014.
- "Tardigrades (Tardigrada): Images, Video Clips, Text and Monthly Magazine." Tardigrades (Tardigrada): Images, Video Clips, Text and Monthly Magazine. N.p., n.d. Web. 8 May 2014.
- "Tardigrades (Water Bears)." Tardigrades. N.p., n.d. Web. 8 May 2014.
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