Transcript for See Dramatic Rescue of Man Who Survived Days Under Capsized Boat

buried under tons of corn. New video this morning of a man who survived nearly three days underneath a capsized boat in the atlantic. Divers stunned to find him alive. This is the view from the diver's camera. Going on to the main deck. Reporter: Investigating the sinking of a chevron oil boat. They never managed they would find survivors. Come out into the passageway. Reporter: Watch as they turn a coroner the water. Should be walking on the ceiling, yeah? Reporter: And look closely. He's alive. He's alive. Reporter: That's harrison. He found an air pocket under his boat after it capsized in heavy seas in nigeria. And he stayed there in the air bubble for nearly four days with no food and no water. Only darkness. Just keep him there. Keep him calm. Reporter: His 11 colleagues drowned. In his air pocket, he could only listen as the boat sank and various sea creatures swim past, all the time, waiting and hoping for a miracle. We're going to bring you home, okay. Reporter: And a miracle he found, as the divers gave him air and lifted him to safety. I wouldn't believe it if i hadn't just seen it. He told his rescuers he was the cook on that boat. Those rescue divers do this for a living. They said for some reason cooks always find a way to survive.

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