When I saw "slime mold" in the headline, I was expecting something bigger that looked a bit more like my recent (last month) lithograph I made, based on the slime mold that lived on a mulch pile at our old house in Virginia:
(Also at my flickr page: http://www.flickr.com/photos/kipw/12754802633/ )
I was sorry when we moved, knowing that the next occupant would haul the pile away and doom this alien organism. The two lozenge-like black spots first looked to me like cockroaches standing on the yellow-orange cushions, but a closer look showed that they were some kind of extrusions. I falsified nature a bit in the print by putting in more connections between the marshmallowy bits.
It was fascinating to watch them develop. For a little while, I could almost believe it was trying to spell things out. ("Never mind. It just says 'HELF.'")