This blog has been set up to allow family and friends of participants in the National Geographic Student Expedition to
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Greg Marshall is a biologist and filmmaker, and an executive producer for National Geographic Television. Greg invented the Crittercam, a camera that is attached to an animal to capture images of the world through the animal's eyes. The devices have provided valuable insight into the behavior and daily life of more than 40 species, including blue whales, black turtles, and manta rays. The Crittercam has enabled Greg to study and document marine and terrestrial life around the world—from