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Grey Whales Starving: Climate Change's Ocean Warning
4 Jun
Summary
- Emaciated grey whales washing ashore signal a potential new unusual mortality event.
- Declining prey in the Arctic is causing malnutrition in migrating grey whales.
- Grey whale population has decreased by more than half since 2017.

A concerning trend of emaciated grey whales washing ashore along British Columbia's coastline may indicate another unusual mortality event. Three dead whales, including two malnourished grey whales, have recently appeared on Haida Gwaii. Researchers suggest these strandings represent only a fraction of total deaths, with malnutrition identified as a primary cause due to declining prey in the Arctic.
This situation serves as a stark warning about the impact of climate change on ocean health. Since 2019, an unusual spike in grey whale deaths has been observed, with over 200 reported worldwide between 2019 and 2023. This year alone, approximately 29 dead grey whales have been documented between B.C. and Washington state, contributing to a significant population decline from a peak of around 28,000 in 2016-17 to approximately 13,000.
The Fisheries and Oceans Canada (DFO) is collaborating with First Nations, including the Haida Gwaii Watchmen, to conduct necropsies and gather crucial data. Despite the grim outlook, efforts are underway to understand the trend. The DFO reported that calf production is at its worst level ever recorded, underscoring the severity of the crisis facing the species.