Killer Whales Are a Wonderful Example of Adaptation to Intelligence

Killer whales are also have more culture than any other, even other smart cetaceans. So when the grandmothers die, that affects the entire community. There's actually some pretty good evidence that because the young aren't dispersing for killer whales as they are with other cetacean,. The existence of the grandmother is changing the survival rates for the children and even for the grandchildren.