National Geographic photographer captures first underwater image of Great White shark in Maine

A juvenile great white shark, about 10 feet long, swims beneath the surface about 15 miles off the coast of Harpswell, Maine. (Brian Skerry/National Geographic)

National Geographic photographer Brian Skerry had logged more than 10,000 hours under water during the past five decades, yet he had never seen what glided past him on July 8: a great white shark…