The first night Deron Burkepile spent underwater was over 10 years ago, but the memory is still fresh in his mind. He remembers getting suited up — a couple of scuba tanks on his back, extra safety gear hanging from his rig—and stepping to the back of the boat.  “You’re used to getting off the boat and coming back in an hour, maybe two at most,” he says. “So you’re thinking, wow, I’m not going to see the sun again for almost two weeks.”