SKETCHY MACHINERY, BLACKOUTS, and occasional deaths—all these things make no-limits dives almost unbearable to watch. And it’s not like there’s much to see anyway. As with other freediving disciplines, the action in no-limits dives happens below the surface. You see a diver huffing and puffing before the dive, see him take a final breath, and then, about four agonizing minutes later, you see him resurfacing—blue with asphyxia, often bloody. A trip to the emergency room usually follows. The whole thing looks insane.
