U.S. Coast Guard Cutter Polar Star (WAGB 10) transits away from the ice shelf near the Bay of Whales, Antarctica, Feb. 17, 2022. Polar Star navigated to the Southernmost navigable seas and entered uncharted waters, reaching the edge of the ice shelf. (U.S. Coast Guard photo by Petty Officer 3rd Class Diolanda Caballero)