“To do this work, you need to be able to read the ocean: its winds, tides, waves — and you need to be strong. Taking photos where the waves break is like being in a washing machine. Your body is flipped around while you try to lift the camera and its waterproof housing — which is like a 25-pound dumbbell.
Some photographers train by running with rocks on the bottom of the ocean. Cunningham has been lifting weights since she was 10 and swam competitively for 20 years. She still works with a trainer and has taken a course that trained her to hold her breath for four minutes.”