Except that he totally did. In fact, he managed to stay alive for 62 hours. Here's how:
That little beauty is called Boyle's law. It states that when you increase atmospheric pressure (say, by sinking 100 feet underwater), gases become denser. This meant the tiny air pocket actually contained a lot more oxygen than it would on land. Meanwhile, that lethally cold water aided Okene by absorbing the murderous carbon dioxide he was breathing out, so the CO2 levels never built up to toxic levels, either.
When the company finally got around to sending a recovery team (they had, understandably, been assuming everyone was dead), Okene gave a diver the shock of a lifetime: The second he heard human sounds, he announced his presence by pounding the s*** out of a wall with a hammer.
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