A National Oceanic and Atmospheric Administration authorized team of marine mammal biologists perform a partial necropsy of a dead gray whale beached in the Copper River Delta, near Cordova, Alaska, May 17, 2019. The Coast Guard assisted in locating the whale and helping to collect tissue samples and photos of a 42-foot young adult female whale. U.S. Coast Guard photo by Petty Officer 3rd Class Tyler Demers.