In the 1970s, this population of Southern Resident killer whales was devastated by marine parks like SeaWorld forcing their calves into captivity. That practice has been outlawed, but other dire threats remain.
At the heart of these orcas' current crisis is a shortage of Chinook salmon, a staple of their diet. The fishes' numbers stand at just 5 percent of what they were when Granny was born - meaning orcas in the region are dying off too, and ultimately human activity is to blame.
"We've lost 95 percent of our Chinook salmon out here," said MacIntyre. "Still, we're overfishing these salmon, and dams are still inhibiting their migration routes. It's unsustainable, yet people keep buying salmon. It's a huge problem."