Norbert Wu / Scuba diver exploring ice caves below Weddell Seal (Leptonychotes weddellii) breathing holes, life below feeds on seal feces, Antarctica
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Bryan and Cherry Alexander / Inuit hunter checking seal net, Bushnan Island, Savissivik, Northwest Greenland, 1998.
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Bryan and Cherry Alexander / Inuit hunter hauling dead seal from breathing hole near Cape York, Northwest Greenland.
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Bryan and Cherry Alexander / Inuit hunters hauling Bearded seal (Erignathus barbatus) caught at breathing hole. Northwest Greenland, 1980.
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Bryan and Cherry Alexander / Fur clad Inuk waiting to harpoon seal at breathing hole. Northwest Greenland, 1980.
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Bryan and Cherry Alexander / Breathing hole in sea ice. Arctic seals have a network of these to avoid predators. Northwest Greenland, 1980.
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Norbert Wu / Weddell Seal (Leptonychotes weddellii) mother and pup float in shallow water under sea ice crack, their breathing holes visible in background, Antarctica
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Norbert Wu / Weddell Seal (Leptonychotes weddellii) at breathing hole, they sometimes fight to protect breathing holes, peering down to scan for rivals, Antarctica
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Norbert Wu / Ice cave below Weddell Seal (Leptonychotes weddellii) breathing holes are filled with Sea Stars (Odontaster validus) and other life which feed on Seal feces, Antarctica
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Norbert Wu / Ice cave below Weddell Seal (Leptonychotes weddellii) breathing holes is filled with Sea Stars (Odontaster validus) which feed on Seal feces, Antarctica
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Norbert Wu / Weddell Seal (Leptonychotes weddellii) at breathing hole, they sometimes fight to protect breathing holes, peering down to scan for rivals, Antarctica
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Norbert Wu / Sea Star (Odontaster validus) gather in ice caves below Weddell Seal breathing holes to feed on seal feces, Antarctica
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Norbert Wu / Weddell Seal (Leptonychotes weddellii) at breathing hole, they sometimes fight to protect breathing holes, peering down to scan for rivals, Antarctica
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Norbert Wu / Weddell Seal (Leptonychotes weddellii) at breathing hole, they sometimes fight to protect breathing holes, peering down to scan for rivals, Antarctica
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Norbert Wu / Weddell Seal (Leptonychotes weddellii) breathing hole from underwater, seals maintain the holes with their teeth, Antarctica
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Norbert Wu / Weddell Seal (Leptonychotes weddellii) breathing entry and exit holes, seals maintain the holes with their teeth, Antarctica
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Norbert Wu / Weddell Seal (Leptonychotes weddellii) group near breathing entry and exit holes, seals maintain the holes with their teeth, Antarctica
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Norbert Wu / Weddell Seal (Leptonychotes weddellii) at breathing hole, they sometimes fight to protect breathing holes, peering down to scan for rivals, Antarctica
