Underwater photography has a fairly long history. It dates back to 1926 when the first underwater color photograph was taken by a National Geographic photographer. Back than due to limited technical equipment photographers used magnesium powder as an explosive on the surface of the water to illuminate the sea down to 15 feet (4,6 meters).
National Geographic Traveler Magazine: 2013 Photo Contest
Portrait of an Eastern Screech Owl - Masters of disguise. The Eastern Screech Owl is seen here doing what they do best. You better have a sharp eye to spot these little birds of prey. Okeefenokee Swamp, Georgia, USA. (Photo and caption by Graham McGeorge/National Geographic Traveler Photo Contest)