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Unseen Oceans on Instagram: "NASA never actually had a primary mission to explore the deep ocean floor. When NASA was established in 1958, its specific legal mandate was to focus on aeronautics and space. While the agency did conduct early underwater research in the 1960s, it was primarily to train astronauts for the weightlessness of space or to test recovery procedures for space capsules splashing down in the ocean. In 1970, the U.S. government created a separate agency, the National Oceanic a