The info on the film is below. Mike Kasic's "Fishman" portion is part of a larger film that profiles the people of Yellowstone. When you click on this link (or cut & paste it into your browser) you'll see a short scene with wolves & then it transitions into the The Fishman film:
http://www.mikekasicsound.com/FishMan.swfYellowstone People: Mike Kasic — The Fishman
Quirky sound recordist and Montana local Mike Kasic is obsessed with the underwater wilderness of the Yellowstone River. In this short film, Kasic tells the tale of the river with the help of his wetsuit and fins, swimming the Yellowstone like a human fish through swift-river canyons and scenic mountain views, and watching trout in fast, frothing currents. His message is simple: what lies beneath a river is a wilderness that is often overlooked, but that is critical for the Yellowstone ecosystem to thrive.
Banff Mountain Film Festival Finalist in: Best Film on Mountain Environment and Best Short Mountain Film
Hope you're fishing.