In this special rebroadcast of the first of Changing Waters' 2019 series on the plight of southern resident killer whales, National Fisheries Conservation Center's Deputy Director Julia Sanders interviews NOAA researcher Laurie Weitkamp about the food web effects caused by recent heat waves in the Pacific ocean, including the "warm blob." These changing conditions have caused major disturbances all the way up the food web: starting with microscopic plankton and ending with our beloved Orca whales. Learn more about what's happening in our changing waters as temperatures rise and fisheries face abrupt disruptions -- including the Chinook salmon that southern resident killer whales rely on.