The first documented case of cooperative hunting between killer whales and dolphins has been observed in the waters off British Columbia, Canada. Incredible aerial footage shows the two species sharing fish scraps after a kill, and scientists have some theories as to why they're teaming up. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

The cetaceans in question include a pod of northern resident killer whales, Orcinus orca , who share their hunting grounds with Pacific white-sided dolphins, Lagenorhynchus obliquidens . They compete for the same resources, and yet they’re regularly seen swimming within meters of each other while fishing along the coastline of British Columbia.

Typically you’d expect to see some signs of confl

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