I'm preparing to take a microbiology laboratory class so I'm reviewing my general microbiology over the summer. When I saw this image my first thought was "It's a paramecium!" (Here is a quick link in U.S.English: en.wikipedia.org/wiki/Parameci… ).
A wonderful fractal, as always. I like the predominate use of only the one color green and its various shades - it seems to somehow enhance the actual shapes.