Clues Point to Climate Change as a Culprit in Gray Whale Deaths

For the past two years, the charismatic marine mammals have washed up on Pacific shores in record numbers. Scientists investigating the strandings suspect warming waters and melting sea ice are partly to blame.

Written byAshley Yeager
| 16 min read

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Bluish-tinged tongue lolling out, the gray whale lay in near silence on the sand of Long Beach, Washington. The rhythmic whap, whap, whap of small waves lapping its belly punctuated the silence. An oily, rotten odor surrounded the behemoth, which tipped the scales at 2,200 kilograms, the equivalent of four heavy-duty SUVs. It was April of 2019, and this whale was one of 34 that Jessie Huggins, who coordinates responses to marine mammal strandings in Washington State, helped to photograph, dissect, and discard that year. Finding a few gray whales washed up on the coast each year is common, she says, but last year 215 of them washed up along the marine mammal’s migration route between Alaska and Baja. And so far this year, there have been more than 160 strandings.

“Something’s clearly going on,” says Sue Moore, an ecologist at the University of Washington who ...

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Meet the Author

  • Ashley started at The Scientist in 2018. Before joining the staff, she worked as a freelance editor and writer, a writer at the Simons Foundation, and a web producer at Science News, among other positions. She holds a bachelor’s degree in journalism from the University of Tennessee, Knoxville, and a master’s degree in science writing from MIT. Ashley edits the Scientist to Watch and Profile sections of the magazine and writes news, features, and other stories for both online and print.

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November 2020

Death on the shore

Researchers investigate recent gray whale strandings along North America’s Pacific coast

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