At first glance, they look like pebbles sitting in the marsh stream at low tide, but when you notice them moving and take a closer look, you see the hundreds (or thousands) of little crabs making their way to — what, I don’t know — higher ground, maybe?
I spent about fifteen minutes balancing on rocks that were slowly sinking into the mud to get this shot. On top of that, I was crouching down with my Olympus OMD almost at ground level with the tilt-out screen tilted out and looking up at me. I shot it with the 60mm macro lens from about three feet away from this guy, who was kind enough to stop and pose for me. It is about a 2x crop, resized using Perfect Resize from onOne Software.