This little guy is a Tardigrade, or a water bear. In 2008, water bears were the first animals demonstrated to be able to survive the vacuum of space. They are virtually indestructible and can survive being blasted with radiation, intense pressures and years of desiccation.
Specimens were launched into space by Swedish scientists and they returned unharmed after eight days.
For more info on their superhero tendencies: http://www.bbc.co.uk/nature/12855775
This image is courtesy of The Scientist, where it is a finalist in their 2012 Lab image awards. Go vote for water bears! http://the-scientist.com/2012/08/08/2012-labby-image-finalists/