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Understanding the Mysteries of Killer Whale Behavior
MARINE WILDLIFE - November 26, 2023
A study analyzing over six decades of interactions between Southern Resident killer whales and porpoises in the Pacific Northwest proposes social play, hunting practice, and mismothering as possible reasons for this peculiar behavior, emphasizing the complexity of killer whale culture and the importance of salmon conservation.
Photo: Paul Nicklen Getty Images
For decades, scientists have been intrigued by Pacific Northwest fish-eating killer whales harassing and killing porpoises without eating them. Researchers Deborah Giles of Wild Orca and Sarah Teman of the SeaDoc Society conducted a study, analyzing over 60 years of interactions between Southern Resident killer whales and porpoises in the Salish Sea to decipher this behavior. These whales, now endangered with only 75 individuals, rely heavily on Chinook salmon, also endangered, for survival.
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