Underwater Wonders of the National Parks (2016) Season 1 Episode 7
Yellowstone, the world’s first National Park, is known for its beautiful forests, wildlife, and waterfalls – but beneath its water’s surface, there lies a complex environment. From deep geothermal smokers, to marine life, the crown jewel of the Park Service is an underwater wonder in itself.
Episode Title: Yellowstone
Air Date: 1970-01-01