Excellent animation overall. The science here is inaccurate as tardigrades aren't actually extremophiles. Extremophiles would be creatures that thrive in geologically harsh conditions and not just survive like tardigrades do, but I'm not going to rate this flash based on the accuracy of that bit of information.
The animation is solid, sound is clear, and overall presentation made it more than enjoyable. I think it's only fair to give 5/5