Dr. Steve Amstrup, USGS biologist, takes the skull measurement of a large male polar bear on the ice pack of the Beaufort Sea. A group of biologists lead by Dr. Amstrup, head to the Beaufort Sea pack ice each year to collect data on this region's polar bear population. I spent two weeks helping them with their research and documenting their project. This is part of the Tri-P, Polar Population Project, sponsored in part by Polar Bears International to census Arctic regions for an accurate count of the world's remaining polar bears
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