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Southern Ocean

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The US Coast Guard Cutter Polar Star (WAGB 10) sits hove-to ice on the frozen Ross Sea, Antarctica, on 6 January 2022. Polar Star is the America’s sole operating heavy icebreaker and the most powerful nonnuclear icebreaker in the world. Photo courtesy of the US Coast Guard/ Petty Officer 3rd Class Diolanda Caballero.

Factbook images and photos — obtained from a variety of sources — are in the public domain and are copyright free.