The ropecam just before submersion.
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Emory Kristof

National Geographic photographer Emory Kristof calls himself a fisherman with a camera—a digital camera. With the aid of Mike Cole, a Geographic computer expert, Kristof built a “ropecam,” a digital video camera. Connected to it are lights and a bait container. A computer chip controls switches that release the bait and turn on the lights. His biggest catch: a pacific sleeper shark, 6,000 feet down, and estimated to be over 20 feet long.

Kristof and Cole reviewing their “catch.”
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Mike Cole loads the camera into the ropecam’s housing.