Pacific gray whales face catastrophic die-off as climate crisis disrupts food supply

Pacific gray whales are experiencing a catastrophic die-off as climate change severely impacts their food supply, according to environmental groups. This alarming trend has seen the whale population drop from approximately 20,000 in 2019 to fewer than 13,000 in 2023, raising serious concerns about their survival.

Climate Change Driving Gray Whale Mortality

The primary cause of the gray whale mortality event is attributed to climate change, which is leading to melting sea ice. This loss of ice is depleting the whales' food sources, making it increasingly difficult for them to survive. Rick Steiner, an Alaska marine ecologist and chair of Public Employees for Environmental Responsibility, emphasized the urgency of the situation, stating, "The stranding numbers last year and this year are enormous compared to their annual average." In 2025, the number of stranded gray whales jumped to 179, a significant increase from the average of 43 strandings from 2006 to 2023.

According to estimates, the gray whale population may face a dire outlook for 2025 and 2026, with projections suggesting that between 2,500 and 8,000 whales could die during this period. The term "catastrophic mortality event" applies to this situation, highlighting the severity of the decline.

Factors Contributing to the Decline

In addition to climate change, several other factors are contributing to the gray whales' decline. These include ship strikes, oil spills, microplastic pollution, algal blooms, and hunting by Indigenous populations in Russia, which reportedly kills up to 40 whales annually. Although the hunting is described as subsistence, Steiner noted that the whale meat is often used to feed livestock.

Federal and state governments have the power to intervene. The National Oceanic and Atmospheric Administration (NOAA) is expected to respond to petitions to relist gray whales under the Endangered Species Act (ESA) in the coming month. However, the Trump administration has been criticized for its reluctance to protect endangered species.

Conservation Efforts and Future Outlook

Despite past conservation efforts that helped the gray whale population rebound from near extinction in the 1970s, the recent trends indicate a troubling future. Steiner expressed hope that the gray whale could become the first species listed by the administration under the ESA. He stated, "The science was so clear on the issue, and the whales were immensely popular in the US west, so I am hopeful that the gray whale will be the administration’s first listing."

In California, ship speed reduction zones have been implemented in areas frequented by gray whales. Although voluntary, many ships comply, reducing whale ship strike deaths by about 50%. Advocacy groups are pushing for similar measures in Oregon, Washington, and Alaska, where opposition from the shipping industry has stalled progress.

As the gray whale population continues to face significant threats, experts urge immediate action to prevent further decline. Steiner concluded, "If you lose thousands of whales in two years – that should concern everyone."