Freediver Kristof Coenen was captivated by the Blue Hole in the Red Sea, sinking to its dark depths on a single breath. But in freediving, pushing to the limit can be fatal. Show more
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Freediver Kristof Coenen was captivated by the Blue Hole in the Red Sea, sinking to its dark depths on a single breath. But in freediving, pushing to the limit can be fatal. Show more
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