In the early morning of May 26th 2013, a tugboat carrying 12 people capsized and sank in the Atlantic Ocean. However, 100 feet below the surface, Nigerian cook Harrison Okene was the only survivor trapped within an air pocket.
Due to the air pressure at that depth, the oxygen managed to last a lot longer than it normally would. Somehow he endured the icy waters for 3 days, surviving on a bottle of Coca-Cola while fighting off barracudas and sharks swimming through the boat’s corridors.