See that little bump of a lichen, dead center in the photo? It's a walking lichen. For real.
On a recent trip to southern Ohio, I was keeping a sharp eye out for these curious bits of mobile lichen clumps, which is pretty much what one must do to spot them. It wasn't too long before a piece of lichen detached itself from the lichenberg that it was attached to, and began to scuttle off. I gave chase, and was able to make some images of this most curious of beasts.