"It’s a very primal, primal fear,” Dr. Andrew Pitkin says. “Being in a small space filled with water. It absolutely horrifies people.” It’s a fear that Pitkin understands, but does not share. He's ...

Are you a keen scuba diver, or is it an activity you’ve always wanted to try? You don’t need to go to some far-flung exotic destination to give it a go. That’s because there is a unique experience on ...