This has been in my wallpaper & random image collection for a while. Unfortunately I forgot the name but I remember that they are tiny in real size, just a millimeter or so. Maybe somebody recognizes them?
yeah, these slime moulds really push the envelope. hope youtube links aren't against the rules here, the slime mould in this one do some really crazy stuff: https://www.youtube.com/watch?v=vlANF-v9lb0
they will sometimes clump together and move around very much like a slug