Meet tardigrades (commonly known as water bears or moss piglets), one of the most interesting species on the planet. They are not afraid of extreme high and low temperatures, pressure and radiation. Boiled water and liquid helium doesn't scare them. Tardigrades can survive almost a decade without water. And they are the only animals known to be able to survive the vacuum of space. And yes, they are very tiny. The biggest adults may reach a body length of 1.5 mm, the smallest below 0.1 mm.


  1. I loved the photos but was very disappointed that no credit was given for their source, nor links thereto. Your disclaimer at the bottom of your page notwithstanding, "thefunlearning" is missing an opportunity for its readers to learn more.

    1. Thanks for your very valuable suggestions, we will definitely try to put source information for posts from now onwards wherever possible.


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