"Something Is Killing Gray Whales. Is It A Sign Of Oceans In Peril?"
"For thousands of years, the gray whales of the eastern Pacific have undertaken one of the longest annual migrations of any mammal — starting in the cold waters of the Arctic, then down past the densely populated coasts and beaches of California before finally finding refuge in the warm, shallow estuaries of Mexico’s Baja California Peninsula. ... Starting in December 2018, this magnificent migration took a fatal turn."