Remarkably robust animal

I was falling down the many-branching rabbit hole of Wikipedia, and discovered this funny little creature -- the tardigrade. Six or eight legs (depending on the species), about the size of a flea -- and remarkably resiliant.

It can survive being boiled, or chilled down to one degree above absolute zero.  It can survive the vacuum of space -- and also over a thousand times atmospheric pressure.  Radiation, toxins... 

Wow.

--GG