6 underwater secrets of America's national parks

The National Park Service celebrated its 100the birthday on Thursday. And while most of us think of the vibrant red canyons in Zion or the sheer face of Yosemite’s Half Dome, the most iconic parks are only the tip of the iceberg.
To celebrate the centennial, CuriosityStream is presenting a seven-part documentary series on the “Underwater Wonders of the National Parks.”
“Everyone talks about the vistas, or they talk about the hiking and the camping,” series producer Jorge Franzini told Travel + Leisure. “I’ve never heard anyone talk about the [areas] hidden beneath the surface.”
Franzini and his team scoured the country for six of the most fascinating underwater locations that are managed and protected by the National Park Service’s Submerged Resource Center. The “Underwater Wonders” series highlights the geothermal smokers of Yellowstone—the likes of which are typically only found deep down on the ocean floor.
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