And makes even more important the need for conservation to protect pods of dolphins so that they do not lose this collective knowledge. If these pods gets destroyed, then other pods have to figure out the technique from scratch.
Apart from humans, some whales go into menopause. The evolutionary benefit is to have experienced females help raise their grandchildren and pass knowledge to them. This makes it even more important to protect older animals.
Certainly protection of pods is important in this case as well, but the interesting thing here is not the fact that the behavior is learned, but that it is learned from a peer. Evidently this is the first such finding in toothed whales.
"So we can imagine them sitting around the campfire of an evening in larger groups, making and mending tools and wraps while they swapped interesting stories of their adventures, of their friends or comrades and of the women's suitors. Sometimes people would wrangle, admonish, or curse and sometimes get high. But they also knew how to give presents and distribute goods."
I'm pretty sure female dolphins have suitors, and these friends or comrades are said to get high. Do dolphins give presents?
Do you even shell, pod-mate?