The Extreme Tardigrade

Most extremophiles are bacteria, living in places like the deep-sea hydrothermal vents, sulfuric hot pools, oxygenless layers in the ocean, and other environments that are deadly to every other form of life. But there are a few extremophile animals, such as the tardigrade.

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Impressed yet? These invertebrates are some of my favorite living animals, and are a fascinating study in how evolution works. We still barely understand extremophiles of this sort, and there's a lot more research to be done. If you are interested in learning more, there are some resources below the break.

• Tardigrades
• Tiny Creatures Survive Space (With No Spacesuit)
• Tardigrade Facts
• Anhydrobiosis and cold tolerance in tardigrades

Video by Hank Green on SciShow (@scishow on Twitter)