A study has revealed that two top ocean predators, northern resident orcas and Pacific white-sided dolphins, join forces to find and feast on salmon off the coast of British Columbia.
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Using drones launched by the Hakai Institute and suction-cup biologging tags that later fell off, researchers captured remarkable aerial and underwater footage of the animals’ interactions. The observations showed that the two species frequently foraged in close proximity and often synchronised their movements. Orcas were seen orienting towards dolphins and following them to deeper waters, suggesting the whales were using dolphin echolocation cues to help find the large salmon – prey that dolphins cannot capture and swallow whole. The videos reveal that once whales caught their prey and broke them apart to share with other orcas, the dolphins were quick to scavenge the leftovers
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#whales #dolphins #britishcolumbia #canada
