Crewmembers aboard Coast Guard Cutter Healy help test a device designed to extract water samples and perform a variety of scientific tests in the Arctic Ocean Aug. 8, 2015, prior to getting underway for the Geotraces mission. Geotraces is Healy's second science mission of the summer, and is an international effort to study the distribution of trace elements in the world's oceans, with a focus on the Arctic Ocean. ( Coast Guard photo by Petty Officer 2nd Class Cory J. Mendenhall)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: alaska, arctic, coast, geotraces, guard, healy, icebreaker, mendenhall, ocean, pacarea