• Pacific walruses (Odobenus rosmarus divergens) maneuver for position at a small crowded haul-out on Arakamchechen Island in the Bering Sea, Chukotka, Russia.
  • A Pacific walrus (Odobenus romarus divergens) at a small crowded hual-outon Arakamchechen Island in the Bering Sea, Russia.
  • A newborn hooded seal pup (Cystophora cristata) lies next to its mother on the floating sea ice where the pup was born.
  • An adult male hooded seal (Cystophora cristata) on sea ice. He has inflated the bladder characteristic of the species -- the "hood," an elastic inflatable sac -- which extents from his nose to his forehead on top of his head.
  • 1jeross_arctic_mammals_050.jpg
  • An adult Svalbard reindeer (Rangifer tarandus platyrhynchus) on autumn tundra.
  • 1jeross_arctic_mammals_036.jpg
  • Pacific walruses (Odobenus rosmarus divergens) maneuver for position at a small crowded haul-out on Arakamchechen Island in the Bering Sea, Chukotka, Russia.
  • An adult male polar bear (Ursus maritimus) lies on sea ice while "still-hunting" -- waiting for an opportunity to grab a seal as it surfaces to breathe. Hudson Bay, Manitoba, Canada.
  • Adult male polar bears (Ursus maritimus) sparring playfully on sea ice. Hudson Bay, Manitoba, Canada.
  • An adult Arctic fox (Vulpes lagopus), in white winter pelage, resting in snow near the shore of Hudson Bay at sunset.
  • Steller sea lions (Eumetopias jubatus) swimming in the Bering Sea, Russia.
  • An adult Arctic hare (Lepus arcticus), well-camouflaged in its white winter pelage, hunkers down during a snowstorm, next to a boulder for protection from the wind.
  • Pacific Walruses (Odobenus rosmarus divergens), including mothers with calves, hauled out and jammed together on a very small stretch of rocky shore backed by nearly-shear cliffs on Herald Island in the Chukchi Sea (Arctic Ocean), Russia.
  • An adult polar bear (Ursus maritimus) swims stealthily among floes of ice in Svalbard, Norway.
  • 1jeross_arctic_mammals_039.jpg
  • 1jeross_arctic_mammals_031.jpg
  • 1jeross_arctic_mammals_029.jpg
  • 1jeross_arctic_mammals_030.jpg
  • An adult Atlantic Walrus (Odobenus rosmarus rosmarus) surfaces to breath while swimming in the Arctic Ocean near Lagoya Island in the Svalbard Archipelago, Norway.
  • Pacific Walruses (Odobenus rosmarus divergens) hauled out and jammed together on a very small stretch of rocky shore backed by nearly-shear cliffs on Wrangel Island in the Chukchi Sea (Arctic Ocean), Russia.
  • An adult Atlantic Walrus (Odobenus rosmarus rosmarus) in the Arctic Ocean near the shore of Lagoya Island in the Svalbard Archipelago, Norway.
  • A bearded seal (Erignathus barbatus) resting on a small iceberg near the receding glacier front of Hamiltonbreen in Hamiltonbukta, Spitsbergen, Svalbard.
  • Two large, mature adult male polar bears (Ursus maritimus) confront one another on the sea ice at a seal kill site. Arctic Ocean north of the Svalbard Archipelago, near 81-degrees North.
  • An adult Arctic fox (Alopex lagopus), in dark summer pelage, carrying a fledgling black-legged kittiwake (Rissa tridactyla) it has just killed at a seabird colony in Diskobukta on Edgeoya in the Svalbard Archipelago, Norway.
  • Harbor seals (Phoca vitulina) at Virgohamna on Danskoya, Svalbard
  • 1jeross_arctic_mammals_021.jpg
  • 1jeross_arctic_mammals_025.jpg
  • A reindeer antler (Rangifer tarandus) lying on the Arctic tundra, Wrangel Island, Russia.
  • 1jeross_arctic_mammals_018.jpg
  • Svalbard reindeer (Rangifer tarandus platyrhynchus) jumping as it travels across the tundra at Eidembukta on Spitsbergen, Svalbard.
  • 1jeross_arctic_mammals_016.jpg
  • An adult Arctic fox (Alopex lagopus), in dark summer pelage, carrying a fledgling black-legged kittiwake (Rissa tridactyla) it has just killed at a seabird colony in Diskobukta on Edgeoya in the Svalbard Archipelago, Norway.
  • 1jeross_arctic_mammals_022.jpg
  • 1jeross_arctic_mammals_017.jpg
  • 1jeross_arctic_mammals_012.jpg
  • 1jeross_arctic_mammals_015.jpg
  • 1jeross_arctic_mammals_009.jpg
  • Atlantic walruses (Odobenus rosmarus rosmarus)  swimming as a herd in northern Novaya Zemlya, where the Barents Sea and Kara Sea meet, in the Russian High Arctic.
  • A young Arctic fox (Alopex lagopus), in dark summer pelage, carrying a fledgling black-legged kittiwake (Rissa tridactyla) it has just killed at a seabird colony in Diskobukta on Edgeoya in the Svalbard Archipelago, Norway.
  • An Atlantic walrus (Odobenus rosmarus rosmarus) mother and her calf rest on sea ice in the Barents Sea (Arctic Ocean) near Stoliczka Island in Franz Josef Land, Russia.
  • A young harp seal pup (Pagophilus groenlandicus) rests on the sea ice where it was born. The pup is less than two weeks old.
  • 1jeross_arctic_mammals_010.jpg
  • Twin polar bear cubs (Ursus maritimus), about three months old, inside a snow den. Polar bear maternity denning area, Wapusk National Park, Western Hudson Bay, Manitoba, Canada.
  • 1jeross_arctic_mammals_011.jpg
  • A harp seal (Pagophilus groenlandicus) mother with her young "white-coat" pup, on the sea ice where the pup was born. The pup is less than 15 days old.
  • A young Arctic fox (Alopex lagopus), in dark summer pelage, crosses a fast-moving stream to hunt for black-legged kittiwakes (Rissa tridactyla) where the birds have a nesting colony in Diskobukta on Edgeoya in the Svalbard Archipelgo, Norway.
  • An adult Atlantic Walrus (Odobenus rosmarus rosmarus) surfaces to breath while swimming in the Arctic Ocean near Lagoya Island in the Svalbard Archipelago, Norway.
  • An adult male polar bear (Ursus maritimus) "still-hunting" on sea ice -- waiting for an opportunity to grab an unsuspecting seal as it surfaces to breathe. Arctic Ocean north of the Svalbard Archipelago, near 81-degrees North.
  • An adult female harp seal (Pagophilus groenlandicus) surfaces in a breathing hole she has maintained in the floating pack ice of the Gulf of St. Lawrence, near where her young pup is resting on the ice.

Arctic & Sub-Arctic Mammals