Yellowstone National Park Fishing Permit

A fishing permit for Yellowstone National Park, managed by the National Park Service. The photo is taken from under the surface of a clear, shallow stream: three spotted trout hold in the current a foot or so off the bottom, their flanks olive and rose with dark speckling. Below them the streambed is rounded cobble in green, grey and pink, threaded with strands of aquatic weed, and the water above is smooth enough that the light coming through it stays bright.