National Geographic on Instagram: "When scientists in British Columbia attached cameras onto northern resident killer whales, also known as orcas, and followed them with drones, they were astonished to see behavior that's never been observed before: the orcas appeared to be coordinating with Pacific white-sided dolphins to hunt. Now, the researchers are questioning whether this is normal behavior that's simply been recorded for the first time, or if these species are employing new tactics in res