Catch a special message from James Cameron, National Geographic Explorer-at-Large, about the DEEPSEA CHALLENGER, on display at Mystic Seaport Museum! This submersible science platform, designed by the legendary explorer and filmmaker, took Cameron to the deepest known point in the ocean—the Challenger Deep, over 6.5 miles down in the Mariana Trench. Named after the HMS CHALLENGER, which first discovered this extreme depth in 1875, the DEEPSEA CHALLENGER is on loan from Woods Hole Oceanographic I