Killer whales and dolphins seen hunting together in rare video

Researchers say the footage, captured near the North-West Pacific coast, is the first recorded evidence of the two working together.

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Despite their common name 'killer whale', orca are actually the largest species of dolphin.

The findings, published in the journal Nature Scientific Reports, is the first recorded evidence of the two working together, according to researchers.

They studied the mammals using drones and camera tags to understand feeding behaviour.

"Not only were the killer whales orienting [themselves] towards the dolphins at the surface, but when the dolphins started to dive, our tagged killer whales would start to dive," lead researcher Dr Sarah Fortune from Dalhousie University in Canada said.