Swanson, who works extensively with Nike and has 20 years of scuba diving experience, wanted to illustrate the power and physique of Olympic gold-medal-winning swimmer Jason Lezak for an ad campaign. “He’s a tall man, with long, powerful arms, and he really stretches out to grab the water and pull through his stroke,” Swanson says. “I wanted to photograph him at the moment he was perfectly outstretched, and I wanted something dramatic. The trouble with shooting up from the deep is that the subject is backlit—not the best scenario for capturing detail. So instead I treated the pool as if it were a studio, because the same lighting principles apply,” says Swanson.