
A new study found that Northern Resident Killer Whales and Pacific white-sided dolphins have formed a cooperative hunting relationship to catch Chinook salmon in the Johnstone Strait and Queen Charlotte Sound. The dolphins utilize echolocation to locate fish at depth, but their small teeth are designed primarily to grip prey, and they cannot swallow large species like Chinook salmon whole. Instead, dolphins locate the fish, and then wait for the killer whales move in to tear them apart, scattering bits of tissue and flesh into the water.
Continue reading Where Killer Whales and Dolphins Hunt Cooperatively

