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DSSV Pressure Drop Approaching Sea-Ice

Reaching the Unexplored with Fourth Element

Last August, I sat in a small black inflatable boat prepping equipment on a gently-rolling Arctic sea just below 80 degrees North. “How long will the descent be?”, asked one of my colleagues. “About an hour and a half”, I replied; “It’s a shallow dive, only about five and a half thousand meters…” We stopped ourselves and laughed – when did 5,500 meters become a ‘shallow dive?’