The killer whales are the most misunderstood of the whales. To begin with, although everyone calls them whales, they’re actually dolphins. For hundreds of years, people believed killer whales were man-eaters. It’s not true. They don’t attack humans. Killer whales travel in pods, and hunt, play, and rest together. In the wild, the females can live up to a hundred years. A mother’s offspring stays with her for life. They mourn their dead.