Brian Skerry

I have photographed sharks in waters around the globe, and I always want more and yearn to peer deeper into their world. To feed my passion and to raise awareness, I developed a story about sharks for 'National Geographic' magazine.

I still think there's a big part of the population that has a lot of misinformation about sharks. But I think it's beginning to change a little bit. As good information about sharks permeates popular culture, things may start to change.

As an astronaut, when you're getting ready to go out of that hatch, you know that's the pinnacle of both your career and your life. The view completely blows you away. The real challenge is getting past the excitement and getting focused and down to work.