"From Baja California to Puget Sound, scientists are seeing signs that gray whales are in distress. And they have no idea why.

Thirty-one dead gray whales have been spotted along the West Coast since January, the most for this time of year since 2000, when 86 whales died. Dozens more have shown visible signs of malnourishment, and sightings of mother-calf pairs are down sharply.

The gray whale death toll will probably climb through the rest of April and into May as the animals continue their annual migration from their warm breeding lagoons in Mexico to their icy feeding grounds in the Arctic, said Justin Greenman, the assistant coordinator of stranded marine mammal response in California for the National Oceanic and Atmospheric Administration."

Leila Miller reports for the New York Times May 1, 2019. [2]