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The year was 1987. Beverly Hills Cop II and the Bangles' "Walk Like An Egyptian" were at the top of the charts. And up in Washington State’s Puget Sound, orcas were swimming around with dead salmon draped across their foreheads.
“It seemed to kind of pass along to multiple different members of the population,” says Deborah Giles, a longtime biologist at the University of Washington’s Friday Harbor Laboratories.
While the behavior started with a female in K-Pod, within a few months, the so-called “salmon hat” craze had spread to both J-Pod and L-Pod, eventually becoming prominent in all three pods that make up the population segment, or clan, known as the southern resident orcas. This clan of 71 individuals exclusively eat salmon.
