The National Park Service celebrates its Centennial in 2016. To mark the occasion, National Geographic Magazine is devoting the entire May 2016 issue to the country’s first national park – Yellowstone. Charlie Hamilton James is one of the photographers whose work will be featured in the issue. His niche is aquatic wildlife photography – animals like cutthroat trout, beavers, and otters. James is from the UK and relocated to Jackson for a year to shoot these pictures in the Greater Yellowstone Ecosystem.