Why Did Nasa Secretly Send 6 Men to the Bottom of the Ocean in 1969?

This documentary uncovers a little known 1969 experiment in which men were sealed inside a small capsule on the ocean floor to survive for weeks in the crushing deep. Launched in the same era as the moon landing, the mission tested how humans might live and work in extreme, isolated environments. The film reveals the science, danger and forgotten daring behind an underwater endurance test. A fascinating watch about exploration, human limits and a secret chapter of the space age. Free to watch in HD on Dr Documentary.

Courtesy of Documentary on YouTube. Watch on YouTube ↗

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