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  • Kaktovik, Alaska, the only town in the Arctic National Wildlife Refuge.
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  • Dr. Steve Amstrup, USGS bioogist, analyzing data from recent polar bear captures at the U.S. Fish and Wildlife house in Kaktovik, Alaska.
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  • A snowy day on the streets of Kaktovik, Alaska.
    D125667.jpg
  • Steve Amstrup and Geoff York, USGS biologists, taking field data from a large, immobilized male polar bear (Ursus maritimus). Kaktovik, Alaska
    D123954.jpg
  • Sculpted snow from the winds blowing in Kaktovik, Alaska.
    D125692.jpg
  • USGS polar bear team preparing for a day of polar bear research. Kaktovik, Alaska
    D125081.jpg
  • Dr. Steve Amstrup and assistant Karyn Rode make good use of their time while waiting for clear weather. Kaktovik, Alaska.
    D125639.jpg
  • Geoff York, USGS biologist, organizing field gear in the garage of the USGS field research station, with polar bear radio collars sitting on the counter in the foreground. Kaktovik, Alaska
    D123846.jpg
  • Geoff York, USGS biologist, prepares a polar bear (Ursus maritimus) darted from the air for data collection. Kaktovik, Alaska
    D123631.jpg
  • Dr. Steve Amstrup, USGS biologist, and Doc Gohmert, chopper pilot, prepare to land near an immobilized polar bear (Ursus maritimus). Beaufort Sea ice pack, Kaktovik, Alaska
    D125960.jpg
  • Dr. Steve Amstrup, leaning from a moving helicopter, takes careful aim with his dart gun used to inject an immobilizing drug into a polar bear. Beaufort Sea ice pack, Kaktovik, Alaska
    D125722.jpg
  • A polar bear (Ursus Maitimus) makes its way over the rugged ice of the Beaufort Sea. Kaktovik, Alaska
    D123495.jpg
  • Dr. Steve Amstrup, lead biologist for the USGS polar bear capture project, instructing a co-worker on the fine points of shooting a dart gun at a running polar bear from a moving helicopter. Kaktovik, Alaska
    D125196.jpg
  • The underbelly fur of a large male polar bear. Kaktovik, Alaska
    D125287.jpg
  • Geoff York, USGS biologist, and Katrina Knott, research assistant, collect data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska
    D123694.jpg
  • A lead in the winter ice of the Beaufort Sea Ice pack. Kaktovik, Alaska
    D125871.jpg
  • Dr. Steve Amstrup, USGS biologist, and assistant Karyn Rode preparing to collect data from a small female polar bear (Ursus maritimus). Beaufort Sea ice pack, Kaktovik, Alaska
    D125131.jpg
  • A polar bear (Ursus maritimus) lies spread out over the ice of the Beaufort Sea. He's immobilized from a tranquilizer and on the verge of waking after USGS biologists have just performed their field tests on him. Kaktovik, Alaska
    D123807.jpg
  • Polar bears (Ursus maritimus) feeding on the carcass of a bowhead whale.(Balaena mysticetus). Kaktovik, Alaska
    D00035643.jpg
  • A polar bear (Ursus Maitimus) makes its way over the rugged ice of the Beaufort Sea in Kaktovik, Alaska.
    D123494.jpg
  • A polar bear (Ursus maritimus) makes its way across the Beaufort Sea Ice pack. Kaktovik, Alaska
    D125880.jpg
  • Geoff York, USGS biologist, takes a blood sample of a darted polar bear. Kaktovik, Alaska
    D123567.jpg
  • tSteve Amstrup, lead polar bear biologist for the USGS, prepares a dart that will be filled with Telazol, an imobilizing drug. Kaktovik, Alaska
    D123857.jpg
  • Polar Bears feeding on the carcass of a Bowhead Whale (Balaena mysticetus). Kaktovik, Alaska
    D00035616.jpg
  • Geoff York, a USGS biologist and Katrina Knott, research assistant, collecting data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D123712.jpg
  • Geoff York a USGS biologist, prepares a radio collar while Katrina Knott, research assistant, painting an ID number on the back of a polar bear. The ID number is to make it easy to see from the air that the bear was captured already. Kaktovik, Alaska
    D123739.jpg
  • Polar bears (Ursus maritimus) feeding on the carcass of a bowhead whale.(Balaena mysticetus). Kaktovik, Alaska
    D00035885.jpg
  • Polar bears (Ursus maritimus) feeding on the carcass of a bowhead whale.(Balaena mysticetus). Kaktovik, Alaska
    D00035617.jpg
  • Polar bears (Ursus maritimus) feeding on the carcass of a bowhead whale.(Balaena mysticetus). Kaktovik, Alaska
    D00035649.jpg
  • Polar bears (Ursus maritimus) feeding on the carcass of a bowhead whale.(Balaena mysticetus). Kaktovik, Alaska
    D00035634.jpg
  • A female polar bear dazed and weak from an immobilizing drug she received from Dr. Steve Amstrup, USGS biologist. Beaufort Sea ice pack, Kaktovik, Alaska
    D125614.jpg
  • Polar Bear feeding on the carcass of a Bowhead Whale.(Balaena mysticetus). Kaktovik, Alaska
    D00035636.jpg
  • Dr. Steve Amstrup, USGS biologist, prepares to take data from a large male polar bear on the Beaufort Sea ice pack. Kaktovik, Alaska
    D125751.jpg
  • The lip tattoo of #20900 tells Dr. Steve Amstrup, USGS biologist, that this large male polar bear had been captured before and had data collected on it. Beaufort Sea ice pack, Kaktovik, Alaska
    D125009.jpg
  • A polar bear paw at ice level showing the claws they use to catch seals. Beaufort Sea ice pack, Kaktovik, Alaska
    D124932.jpg
  • A large male polar bear, sedated with immobilizing drugs, watches Dr. Steve Amstrup exit from the capture helicopter. Beaufort Sea pack ice, Kaktovik, Alaska
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  • Beluga whales (Delphinapterus leucas) come to the surface of the Beaufort Sea using a wide open lead that has formed in the sea ice. Kaktovik, Alaska.
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  • A young Beluga whale (Delphinapterus leucas) identified by his darker gray coloration, comes to the surface of the Beaufort Sea using a newly formed lead to maneuver through the ice pack. Kaktovik, Alaska.
    D124025.jpg
  • Steve Amstrup and Geoff York, USGS biologists, taking field data from an immobilized large male polar bear (Ursus maritimus). Kaktovik, Alaska
    D123987.jpg
  • Dr. Steven C. Amstrup checks the paw of polar bear (Ursus maritimus) #20571, a large male that had been tagged years earlier. Kaktovik, Alaska.
    D123973.jpg
  • An ice pressure ridge runs for as far as the eye can see and nearly perfectly straight. Beaufort Sea near Kaktovik, Alaska.
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  • The Brooks Range from the window of my plane on my way to to kaktovik, Alaska
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  • The ear of a large male polar bear. Beaufort Sea ice pack, Kaktovik, Alaska
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  • Dr. Steve Amstrup, USGS biologist, and assistant Karyn Rode prepare a radio collar to be fitted to a female polar bear on the Beaufort Sea ice pack. Kaktovik, Alaska
    D125178.jpg
  • Polar bears (Ursus maritimus) feeding on the carcass of a bowhead whale.(Balaena mysticetus). Kaktovik, Alaska
    D00035624.jpg
  • Polar bears (Ursus maritimus) feeding on the carcass of a bowhead whale.(Balaena mysticetus). Kaktovik, Alaska
    D00035640.jpg
  • Polar Bear (Ursus maritimus) and an Alaskan Brown Bear (Ursus middendorffi) feeding on the carcass of a Bowhead Whale (Balaena mysticetus). Kaktovik, Alaska
    D00035655.jpg
  • Polar bear (Ursus maritimus) hind foot, paw. Kaktovik, Alaska
    D124525.jpg
  • Polar Bear feeding on a carcass of a Bowhead Whale.(Balaena mysticetus). Kaktovik, Alaska
    D00034995.jpg
  • Bearded seals on the ice pack of the Beaufort Sea. Kaktovik, Alaska
    D125546.jpg
  • An ice pressure ridge runs for as far as the eye can see and nearly perfectly straight. Beaufort Sea near Kaktovik, Alaska.
    D170538.jpg
  • Dr. Steve Amstrup collecting polar bear data on the Beaufort Sea near Kaktovik, Alaska.
    D170410.jpg
  • Dr. Steven Amstrup searching for a dropped polar bear collar on the Beaufort Sea near Kaktovik, Alaska
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  • Dr. Steve Amstrup, USGS biologist, prepares to take data from a large male polar bear on the Beaufort Sea ice pack. Kaktovik, Alaska
    D125753.jpg
  • Steve Amstrup, lead USGS biologist, paints a number on the back of an immobilized large male polar bear that was darted for research purposes. Kaktovik, Alaska
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  • Steve Amstrup, lead USGS biologist, taking field data from an immobilized large male polar bear. Kaktovik, Alaska
    D123981.jpg
  • Polar bear radio collars at the USGS field station in Kaktovik, Alaska.
    D123848.jpg
  • Geoff York, USGS biologist, collecting data from a polar bear (Ursus maritimus)  on the Beaufort Sea ice. This female bear will receive a radio collar for future tracking.  Kaktovik, Alaska
    D123697.jpg
  • Glaucous Gulls(Larua hyperboreus) in flight. Kaktovik. Alaska.
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  • Glaucous Gulls(Larua hyperboreus) on carcass of bowhead whale. Kaktovik, Alaska.
    D00035760.jpg
  • Ice formations stacked up on the ice pack of the Beaufort Sea. Kaktovik, Alaska
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  • Dr. Steve Amstrup collecting polar bear data on the Beaufort Sea near Kaktovik, Alaska.
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  • A Bearded Seal, hauled out on the ice at the edge of a lead in the Beaufort Sea. Kaktovik, Alaska
    D125491.jpg
  • Steve Amstrup, lead biologist for the USGS, leans out of a research helicopter to take aim at a running polar bear to be darted for data collection. Beaufort Sea ice, Kaktovik, Alaska
    D123902.jpg
  • Glaucous Gulls(Larua hyperboreus) in flight. Kaktovik. Alaska.
    D00035827.jpg
  • Glaucous Gulls(Larua hyperboreus) on carcass of bowhead whale. Kaktovik, Alaska.
    D00035768.jpg
  • Geoff York, biologist for the USGS,  prepares a male polar bear to extract a tooth. The tooth is used to determine the age of the animal. Kaktovik, Alaska
    D123525.jpg
  • Steve Amstrup, lead USGS biologist, and assistant Karyn Rode, taking field data from an immobilized large male polar bear (Ursus maritmus). Kaktovik, Alaska
    D125246.jpg
  • Polar Bear feeding on a carcass of a Bowhead Whale (Balaena mysticetus). Kaktovik, Alaska
    D00034915.jpg
  • An ice pressure ridge runs for as far as the eye can see and nearly perfectly straight. Beaufort Sea near Kaktovik, Alaska.
    D170533.jpg
  • Steve Amstrup, lead polar bear biologist for the USGS, prepares a dart that will be filled with telezol, an imobilizing drug. Kaktovik, Alaska
    D123862.jpg
  • A layer of smog hangs over fog rising from the Beaufort Sea ice pack near Kaktovik, Alaska. It's thought that this smog comes from the Prudhoe Bay oil production area.
    D171774.jpg
  • A lead in the winter ice of the Beaufort Sea Ice pack. Kaktovik, Alaska
    D125869.jpg
  • Steve Amstrup , USGS biologist, taking field data from an immobilized large male polar bear (Ursus maritimus). Kaktovik, Alaska.
    D123939.jpg
  • Ice formations stacked up on the ice pack of the Beaufort Sea.
    D125821.jpg
  • Steve Amstrup and Geoff York, USGS biologists, taking blood from an immobilized large male polar bear.
    D123997.jpg
  • Dr. Steven Amstrup digs up the body of a female polar bear he tracked with a radio collar. He was unsure of caused her death. She was buried over by sand from ocean waves along the coast of the Beaufort Sea, .Alaska.
    D172321.jpg
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  • Dr. Steven Amstrup investigates the carcass of a baby Ringed Seal (Pusa hispida) it was partially eaten by a polar bear. Beaufort Sea, Alaska.
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  • The Brooks Range rises out of the Arctic National Wildlife Refuge. Alaska
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  • bearded seal (Erignathus barbatus) a mother and her new born pup on the edge of an open water lead on the Beaufort Sea, Alaska.
    D171371.jpg
  • bearded seal (Erignathus barbatus) a mother and her new born pup on the edge of an open water lead on the Beaufort Sea, Alaska.
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  • Bearded seal (Erignathus barbatus)  hauled out at the edge of a lead on the Beaufort Sea ice pack. Alaska
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  • Bearded seal (Erignathus barbatus)  hauled out at the edge of a lead on the Beaufort Sea ice pack. Alaska
    D170323.jpg
  • Dr Amstrup adds a lip tattoo to a polar bear cub, Beaufort Sea, Alaska
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  • Dr Steven amstrup and Susie Miller collect data from a captured polar bear, Beaufort Sea, Alaska.
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  • Dr Amstrup and crew take the weight of a polar bear on the Beaufort Sea, alaska.
    D169708.jpg
  • Glaucous Gull(Larus hyperboreus) Feeding on bowhead whale(Balaena mysticetus). Kakotivik, Alaska.
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  • Biologists with the USF&W doing a polar bear survey along the coast of the Beaufort Sea, Alaska.
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  • Dr. Steven Amstrup and Susie Miller collect the Bioelectric Impedance Analysis (BIA) that quantifies fat reserves of a recently immobilized polar bear on the Beaufort Sea, Alaska.
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  • Dr Steven Amstrup collects data from a polar bear on the Beaufort Sea, Alaska.
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  • A large male polar bear, sedated from an immobilizing drug, runs from the capture helicopter on the Beaufort Sea ice pack.
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  • Dr Steven Amstrup prepares a radio telemetry device for tracking a polar bear on the Beaufort Sea, Alaska.
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  • Polar Bear (Ursus maritimus) a wound on the hide of a large male during mating season on the Beaufort Sea, alaska.
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  • Ringed Seal (Pusa hispida) a baby seal lies dead in the snow. Beaufort Sea, Alaska
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  • Ringed Seal (Pusa hispida) in the ice. This scene shows where a polar bear has enerred one of th holes in the foreground and then swam the the far hole, about 100 yards, at the top of the frame and reemerged .
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  • Polar Bear (Ursus maritimus) a lone bear on the sea ice of the Beaufort Sea, Alaska(Ursus maritimus) a
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  • Polar Bear (Ursus maritimus) tracks on the ice of the Beaufort Sea, Alaska
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  • Common Eiders (Somateria mollissima) and King Eiders (Somateria spectabilis) on in flight over the Beaufort Sea ice pack. Off the coast of the Arctic National Wildlife Refuge. Alaska
    D171805.jpg
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