Starvation has decimated gray whales off the Pacific Coast. Can the giants ever recover?
LA TimesWhen large numbers of gray whales began washing up along North America’s Pacific Coast nearly six years ago, marine scientists could only speculate at the reason: Was it disease? Now — after more than 700 gray whales have washed ashore in Mexico, Canada, California and other U.S. states since late 2018 — new research published Tuesday in PLOS One suggests the culprit was a critical drop in food availability in the mammals’ Arctic and sub-Arctic seafloor feeding grounds. Explore the section “Did something happen to their food supply in those years that put them under acute nutritional stress and which resulted in a lot of whales being in really poor condition and dying?” said study co-author Padraig Duignan, a pathologist at the Marine Mammal Center in Sausalito. Every year, California gray whales make a roughly 13,000-mile round-trip journey from the chilly waters of the Arctic to the balmy lagoons of Mexico’s Baja Peninsula, and back again.