This was taken at the Eagle River Nature Center in Eagle River Alaska in late September. Eagle River is 15 miles north of Anchorage. The ripples are from salmon in the pond. No grizzles showed up. Nikon D300, ISO 200, Nikkor 18-200mm lens @ 18mm, f-22, 1/10th of a sec. Manfroto Pro 190 tripod, polarizer, 7:30am .