Keywords: arctic ocean sea ice seaice uscg usgs healy st-laurent stlaurent cutter coast guard coastguard outdoor A polar bear breaks through thin Actic Ocean ice Aug. 23, 2009. Photo Credit: Patrick Kelley, U.S. Coast Guard A polar bear breaks through thin Actic Ocean ice Aug. 23, 2009. Photo Credit: Patrick Kelley, U.S. Coast Guard |