When the tugboat Jascon-4 capsized and sank in a heavy storm off the coast of Nigeria, ship cook Harrison Okene was trapped inside an inverted bathroom as the vessel settled on the ocean floor at a depth of 100 feet. In complete, freezing darkness, wearing only his underwear, Okene survived for 60 hours inside a precarious four-foot air pocket that was progressively depleting of oxygen while carbon dioxide levels rose dangerously. Listening to the sounds of predatory fish eating his deceased crew members in the flooded cabins nearby, Okene maintained extraordinary mental clarity and deep spiritual faith until South African saturation divers accidentally discovered him alive during a body recovery operation.

Okene's harrowing deep-sea ordeal stands as one of the most remarkable instances of survival in maritime history, capturing global attention and generating significant medical and psychological literature. His experience provided modern maritime poetry and psychological prose with an unprecedented, visceral symbol of the absolute limits of human endurance inside the silent, claustrophobic abyss of the ocean.