Researchers have observed dolphins and killer whales hunting together for the first time as part of a new study released on Thursday, Dec. 11.

The top predators joined forces to feast on salmon off the coast of British Columbia. Researchers captured footage of the mammals engaging in cooperative behavior between Aug. 15-30, 2020, showing they may have formed a relationship that provides mutual benefits.

“We’ve long known that resident killer whales interact with Pacific white-sided dolphins, but seeing them dive and hunt in sync with dolphins completely changes our understanding of what those encounters mean,” the study’s lead author, Sarah Fortune, the Canadian Wildlife Federation (CWF) Chair in Large Whale Conservation and an assistant professor at Dalhousie University, said in a s

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