Yes but I thought they handled that very well. And . . . SPOILER ALERT FOR DIVEPROKOKO . . . I thought cinematically (for those who don't know I'm an actor and SAG/AFTRA member) they way they handled him running out of air was very well done. Listen to the breathing sounds as he gets lower and lower on air. My only criticism would be that he was awfully calm in that sequence, almost accepting of his fate. I would have thought IRL there'd be more of a frantic dash to try to find an air pocket once you realize what's going on.