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Steve Amstrup and Geoff York, USGS biologists, using a block and tackle device to take the weight of a large male polar bear (Ursus maritimus). He was 982 lbs. Kaktovik, Alaska.

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Filename: D123956.jpg
Image Size: 465x700 / 113.4KB; www.naturalexposures.com; Alaska Arctic Beaufort Sea Horizontal Katovik PBI Polar Bear Research Ursus Maritimus Wildlife Research people science scientific research vertical
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Steve Amstrup and Geoff York, USGS biologists, using a block and tackle device to take the weight of a large male polar bear (Ursus maritimus). He was 982 lbs. Kaktovik, Alaska.