Narwhal Tusk Research. Dr. Nweeia and Arctic Bay hunter and artist Adrian Arnauyumayuq conduct research in Pond Inlet, Baffin Island, Nunavut, 2008.
Gretchen Freund/Narwhal Tusk Research
A Canadian-manufactured DHC-3 Otter plane surveys mountain glaciers for Operation IceBridge-Alaska, 2014.
NASA/Chris Larsen, University of Alaska-Fairbanks
A terminal moraine, an accumulation of soil and rock, shows the farthest point of advance for a small glacier, Penny Ice Cap, in Auyuittuq National Park of Baffin Island, Nunavut, 2013.
Michael Studinger/NASA
A biological oceanographer with the U.S. National Oceanic and Atmospheric Administration, Sue Moore listens to real-time sounds captured by an underwater hydrophone, a technique widely used in marine mammal studies, 2005.
Jeremy Potter, NOAA/OAR/OE
Hymenodora glacialis, the only pelagic shrimp known to inhabit the Canada Basin, 2005.
Russ Hopcroft/ Hidden Ocean 2005 Expedition: NOAA Office of Ocean Exploration
Jeremy Stewart, a diver for Fisheries and Oceans Canada, suctions tiny amphipods from an ice floe in the Canada Basin of the Arctic Ocean, 2004.
Paul Nicklen/National Geographic Creative
A scientist takes an ice sample in the Canada Basin of the Arctic Ocean, 2004.
Paul Nicklen/National Geographic Creative
A narwhal pod surfaces to breathe, 2006.
Paul Nicklen/National Geographic Creative
A large melt-water pool over sea ice seen during an IceBridge survey of the Beaufort Sea, 2016.
NASA/Operation IceBridge
A terminal moraine, an accumulation of soil and rock, shows the farthest point of advance for a small glacier, Penny Ice Cap, in Auyuittuq National Park of Baffin Island, Nunavut, 2013.
Michael Studinger/NASA
Clione, a shell-less snail known as the Sea Butterfly, swims in the shallow waters beneath the ice in the Beaufort Sea, 2005.
Kevin Raskoff/Hidden Ocean 2005 Expedition: NOAA Office of Ocean Exploration
Crossata sp., a deep red medusa jellyfish found off the bottom of the deep Arctic, 2005.
Kevin Raskoff/Hidden Ocean 2005 Expedition: NOAA Office of Ocean Exploration
The Canadian Coast Guard Heavy Icebreaker Louis S. St-Laurent breaks through the ice of the Arctic Ocean, 2004.
Paul Nicklen/National Geographic Creative
Scientists descend in a basket to the ice from a research ship in the Beaufort Sea, 2004.
Paul Nicklen/National Geographic Creative