In the first six months of this year, 146 gray whale carcasses washed ashore along the Pacific coast — a number that, marine biologists warn, represents only a fraction of the true death toll. Because most whale bodies sink before they reach land, scientists estimate that for every carcass counted onshore, between seven and twenty-five more go unseen beneath the surface. That multiplier transforms a grim statistic into a catastrophic one: somewhere between 2,500 and 8,000 gray whales are believed to have died since 2024, meeting the formal threshold for a "catastrophic mortality event." The population has fallen from roughly 20,000 animals in 2019 to fewer than 13,000 today.

The whales that do wash ashore are severely emaciated, and the scientific consensus points to starvation as the primary cause. Each year, gray whales migrate from the warm lagoons of Baja California, Mexico, northward to feed in the cold, shallow waters around Alaska. That feeding ground depends on sea ice to sustain the tiny crustaceans the whales consume in vast quantities. As Arctic sea ice retreats at historically unprecedented rates, that food supply is collapsing beneath them.

"The environment may now be changing at a pace that exceeds the animals' ability to adapt," NOAA marine biologist David Weller noted in an agency statement. Starvation is not the only pressure. Ship strikes, microplastic contamination, toxic algal blooms, and Russian subsistence harvesting are all believed to be contributing to the die-off. Environmental groups have petitioned NOAA to relist the gray whale under the Endangered Species Act — a protection the species lost in 1994 after recovering from near-extinction in the 1970s.