where they had the bar removed. all of a sudden you see this huge head with just teeth inching its way closer and closer. >> any diver's worst nightmare, jerry and another tourist are forced into the bottom of the cage to avoid the now thrashing shark. >> looking at the jaws of death. this can't be happening. i can't die. >> the shark is forcing his way further and further into the cage. >> it was a few inches away. i remember looking into his mouth, my hands on his nose. >> jerry is frantically searching for a way out. >> i wasn't going to be able to swim up to the top because he was just moving around too much. more than likely he was going to bite a leg or an arm. >> the situation is dire and almost unbelievably it's about to get worse. >> the next thing you know, nothings my regulator out of my mouth. >> with no air supply, it's do or die. i realize i've got to get out of the cage or i'm going to drown,