Mapping the extended continental shelf in the Arctic

Crewmembers aboard Coast Guard Cutter Healy prepare to deploy a dredge in the Arctic Ocean on Sept. 23, 2016. The dredge collected rock samples from outcrops of a seafloor canyon. U.S. Coast Guard photo by Petty Officer 3rd Class Lauren Steenson.

Modern day explorers from the Arctic nations of Canada, Denmark, Finland, Iceland, Sweden, Norway, Russia, and the United States are setting their sights north to map the seabed and establish sovereign rights to resources in an icy area that just over a decade ago was virtually inaccessible.

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