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  • 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
    D124909.jpg
  • Grizzly bear (Ursus arctos horribilis) mother and cubs from the Arctic National Wildlife Refuge coming onto the coast of the Beaufort Sea, Alaska.
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  • Grizzly bear (Ursus arctos horribilis) from the Arctic National Wildlife Refuge coming onto the coast of the Beaufort Sea, Alaska.
    D00035715.jpg
  • Ice formations stacked up on the ice pack of the Beaufort Sea. Kaktovik, Alaska
    D125813.jpg
  • Dr. Steve Amstrup with a tranqulized polar bear (Ursus maritimus) on the ice pack of the Beaufort Sea. Kaktovik, Alaska
    D124625-P.jpg
  • Bearded seal (Erignathus barbatus) mother and newborn pup on the edge of an open water lead. Beaufort Sea, Alaska
    D171456.jpg
  • USGS biologist Dr. Steve Amstrup and assistant Karyn Rode attempt to lift a small 365-pound female polar bear on the Beaufort Sea ice pack.
    D125184-P.jpg
  • A lead in the winter ice of the Beaufort Sea ice pack. Kaktovik, Alaska
    D125871.jpg
  • Dr. Steven Amstrup with a polar bear on the Beaufort Sea, Alaska.
    D170908-P.jpg
  • Dr. Steven Amstrup collects data from a polar bear on the Beaufort Sea, Alaska.
    D171497-P.jpg
  • Polar bear shot with a dart filled with an immobilizing drug. The bear is showing signs of ataxia. Beaufort Sea, Alaska
    D172180.jpg
  • Dr. Steven Amstrup shows the canines of a polar bear. Beaufort Sea, Alaska
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  • Broken ice in the Beaufort Sea. Arctic Ocean
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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 measures the length of a recently immobilized polar bear. A spot of red blood on the animal's fur shows the entrance point of the dart. Beaufort Sea, Alaska
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  • A radio-collared polar bear (Ursus maritimus) makes its way across the broken ice pack of the Beaufort Sea. Arctic Ocean
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  • A large male polar bear (Ursus maritimus) skirts the edge of a lead while on the trail of a female in estrus. Beaufort Sea, Alaska
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  • The icebreaker Polar Sea in the arctic pack ice of the Beaufort Sea.
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  • A radio collared polar bear makes its way across the broken ice pack of the Beaufort Sea. Arctic Ocean
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  • The Polar Sea icebreaker in the Arctic pack ice of the Beaufort Sea.
    D233158.jpg
  • Broken ice in the Beaufort Sea. Arctic Ocean
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  • Sunrise seen from the icebreaker Polar Sea. Beaufort Sea
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  • A female polar bear (Ursus maritimus) darted and weak from an immobilizing drug she received from Dr. Steve Amstrup, USGS biologist. Beaufort Sea, Alaska
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  • Dr Amstrup prepares to attach a GPS satellite tracking collar to an immobilized polar bear on the Beaufort Sea. The collars are placed on females exclusively since the necks of males get too large for them to work properly. The collars are a high tech way to follow these animals far out onto the ice where humans can't go. The bears are tracked by satellites which helps the scientists determine the home range of individual animals and other details about a particular bear's life such as length of time spent resting or hunting in one area.
    D171752.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
  • 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
  • Polar bear tracks crossing broken ice in the Beaufort Sea. Arctic Ocean
    D232902-P.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
  • Pancake ice on the Beaufort Sea.
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  • Dr. Steven Amstrup, lead scientist for the US Geological Survey, darts a female polar bear on the Beaufort Sea. Darting the bears from a helicopter can be extremely treacherous. The pilot has to hover over a running animal that is twisting and turning, dodging and ducking, an animal that feels it's running for its life. This bear is hit directly between the shoulders with an immobilizing dart. It takes anywhere from 4-15 minutes for the drug to take effect and immobilize the bear which will be out for 1-2 hours as the scientists process the data.
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  • Karyn Rode prepares to take data from a large male polar bear on the ice pack of the Beaufort Sea, Alaska.
    D125251.jpg
  • A polar bear (Ursus Maitimus) makes its way over the rugged ice of the Beaufort Sea. Kaktovik, Alaska
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  • A polar bear (Ursus Maitimus) makes its way over the rugged ice of the Beaufort Sea in Kaktovik, Alaska.
    D123494.jpg
  • Ice breaking apart during late April on the Beaufort Sea. Kaktovik, Alaska
    D123486.jpg
  • Polar Bear (Ursus maritimus) tracks on the ice of the Beaufort Sea in Alaska.
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  • Bearded Seal in the Beaufort Sea, Alaska.
    D171160.jpg
  • Dr. Steven Amstrup and Eric Regehr with a large male polar bear on the Beaufort Sea in Alaska.
    D169626.jpg
  • A polar bear (Ursus maritimus) makes its way across the Beaufort Sea Ice pack. Kaktovik, Alaska
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  • The Beaufort Sea ice pack breaks into chunks during late April 2007.
    D123493.jpg
  • Polar Bear (Ursus maritimus) a large male lies immobilized on the ice as Dr. Steven Amstrup and his assistant head for a female that was darted at the same time and is down on the ice. Beaufort Sea, Alaska
    D170397.jpg
  • The icebreaker Polar Sea in the arctic pack ice of the Beaufort Sea.
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  • The radar screen on the Polar Sea Icebreaker glows green showing the crew what ice conditions are ahead. Beaufort Sea, Arctic Ocean
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  • The icebreaker Polar Sea sits in the arctic pack ice of the Beaufort Sea while dive and ice coring teams collect samples. Arctic Ocean
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  • Dr Steven Amstrup collects data from a polar bear on the Beaufort Sea, Alaska.
    D171516.jpg
  • 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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  • 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.
    D124071.jpg
  • 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.
    D124017.jpg
  • 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.
    D124071.jpg
  • 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.
    D124062.jpg
  • 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.
    D124066.jpg
  • Broken ice in the Beaufort Sea. Arctic Ocean
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  • Beluga whales (Delphinapterus leucas) come to the surface of the Beaufort Sea among chunks of broken ice. Kaktovik, Alaska.
    D124012.jpg
  • Sunrise over pancake ice forming  on the Beaufort Sea.
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  • Broken ice in the Beaufort Sea.  Arctic Ocean
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  • Broken ice in the Beaufort Sea. Arctic Ocean
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  • Ice formations stacked up on the ice pack of the Beaufort Sea.
    D125821.jpg
  • 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.
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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
  • 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
  • Broken ice in the Beaufort Sea. Arctic Ocean
    D233067.jpg
  • Dr. Steve Amstrup, USGS biologist, and assitant Kristin Simac prepare to take date from a polar bear (Ursus maritimus)  on the Beaufort Sea ice pack. Kaktovik, Alaska.
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  • Dr. Steve Amstrup prepares the lip of a large male polar bear (Ursus maritimus) to be tattooed. Beaufort Sea ice pack, Kaktovik, Alaska.
    D124986.jpg
  • Dr. Steve Amstrup cuts an immobilizing dart from the hide of a polar bear. Beaufort Sea, Alaska
    D124831.jpg
  • Seal holes in the thin, newly formed ice of a lead on the Beaufort Sea ice pack. Kaktovik, Alaska.
    D124675.jpg
  • Beaufort Sea ice pack. Spring. Offshore from Kaktovik, ak.
    D125276.jpg
  • Dr. Steve Amstrup, USGS biologist and assistant karyn Rode preparing a radio collar to be fitted to a female polar bear on the Beaufort Sea ice pack.
    D125169.jpg
  • A large male polar bear (Ursus maritimus) lies tranquilized on the ice pack of the Beaufort Sea. Kaktovik, Alaska.
    D124710.jpg
  • Polar bear (Ursus maritimus) tracks on the ice of Beaufort Sea, Alaska.
    D171935.jpg
  • Dr. Steve Amstrup , USGS biologist, and Karyn Rode, field assitant, weighing a large male polar bear (Ursus maritimus) on the ice pack of the Beaufort Sea. Kaktovic, Alaska.
    D124605.jpg
  • Geoff York, USGS biologist and assistant Karen Rode take weight measurements of a captured polar bear (Ursus maritimus) on the pack ice of the Beaufort Sea. Kaktovik, Alaska.
    D124398.jpg
  • Ice formations stacked up on the ice pack of the Beaufort Sea. Kaktovik, Alaska.
    D125834.jpg
  • Dr. Steve Amstrup, USGS biologist, and Daniel Cox use a weight bar to lift and weigh a small, 365-pound female polar bear. Beaufort Sea
    D125192.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, USGS biologist, and chopper pilot Doc Gohmert hover over a polar bear (Ursus maritimus) recently darted with immobilizing drugs. Beaufort Sea ice pack, Kaktovik, Alaska
    D125563.jpg
  • Dr. Steve Amstrup, USGS biologist, takes steady aim from the helicopter as he prepares to dart a polar bear on the ice pack of the Beaufort Sea. Kaktovik, Alaska
    D124463.jpg
  • Geoff York, a USGS biologist, and Katrina Knott, research assistant, collecting data from a polar bear on the Beaufort Sea ice. They use a block and tackle to take weight measurments. Kaktovik, Alaska
    D123732.jpg
  • A large male polar bear sedated with immobilizing drugs by Dr. Steve Amstrup. Beaufort Sea, Alaska
    D125317.jpg
  • A large male polar bear, sedated from an immobilizing drug, runs from the capture helicopter on the Beaufort Sea ice pack.
    D125308.jpg
  • Ice formations stacked up on the ice pack of the Beaufort Sea. Kaktovik, Alaska.
    D125839.jpg
  • Dr. Steve Amstrup, leaning from a moving helicopter, takes careful aim with his dart gun used to inject immobilizing drug in to a polar bear. Beaufort Sea ice pack. Kaktovik, Alaska.
    D125800.jpg
  • A Bearded Seal (Erignathus barbatus) on the ice pack of the Beaufort sea. Kaktovik, Alaska.
    D125503.jpg
  • Dr. Steve Amstrup, USGS biologist, weighing a large, male polar bear (Ursus maritimus) weighing 944 pouns on the Beaufort Sea ice pack. Kaktovik, Alaska.
    D124957.jpg
  • The ear of a large male polar bear. Beaufort Sea ice pack, Kaktovik, Alaska
    D124940.jpg
  • Kristin Simac check a largemale polar bear she recently darted with a tranqualizer gun. Beaufort Sea ice.
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  • Large male polar bear recently tranquilized on the Beaufort Sea ice pack.
    D124817.jpg
  • Capture helicopter hovers above darted polar bear. Beaufort Sea pack ice.
    D124803.jpg
  • Polar bear (Ursus maritimus) tracks wander out over a newly frozen lead on the ice pack of the Beaufort Sea. Kaktovik, Alaska.
    D124772.jpg
  • Ice formations on the pack ice of the Beaufort Sea near Kaktovik, Alaska.
    D124881.jpg
  • Dr. Steve Amstrup with a tranqulized polar bear ( Ursus maritimus) on the ice pack of the Beaufort Sea. Kaktovik, Alaska.
    D124663.jpg
  • Dr. Steve Amstrup with a tranqulized polar bear ( Ursus maritimus) on the ice pack of the Beaufort Sea. Kaktovik, Alaska.
    D124655.jpg
  • Dr. Steve Amstrup, USGS biologist, takes a biopsy from a large male polar bear (Ursus maritimus). Beaufort Sea ice pack. Kaktovik, Alaska.
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  • A polar bear (Ursus maritimus) lies immobilized on the ice pack of the Beaufort Sea framed by calipers used to take it's measurements. Kaktovik, Alaska.
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  • Polar Bear (Ursus maritimus) tracks on a newly frozen lead on the Beaufort Sea ice pack. Kaktovik, Alaska.
    D124671.jpg
  • Geoff York a USGS biologist and Karyn Rode, a research assistant, collecting data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D124441.jpg
  • Geoff York, a USGS biologist and Karyn Rhode, a research assistant, collecting data from a polar bear (Ursus maritimus) on the Beaufort Sea ice. Kaktovik, Alaska.
    D124352.jpg
  • Geoff York, USGS biologist, and his assistant take weight measurements of a captured polar bear on the pack ice of the Beaufort Sea.
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  • Blood samples from polar bear #20571, captured on the Beaufort Sea, prepared by Katrina Knott will eventually   be sent to Fairbanks, Alaska for further analysis. Kaktovik, Alaska.
    D124214.jpg
  • A helicopter flying over the Beaufort Sea. Kaktovik, Alaska.
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  • A large male polar bear (Ursus maritimus) lies immobilized on ice of the Beaufort Sea. Kaktovik, Alaska.
    D123950.jpg
  • A large male polar bear (Ursus maritimus) having just been darted with an immobilizing drug, stands shaky and ready to go down against the beautiful backdrop of the Beaufort Sea ice. Kaktovik, Alaska.
    D124102.jpg
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