The Telegraph reports that dolphins form distinct cliques and communities over decades based on their skill levels with various tools, such as coral sponges they use to protect their beaks while foraging for food.

The communities…mean the aquatic animals share their knowledge only with those in their own circle, passing it down the family line.
The findings mean the traits of “inclusive inheritability” and culture are no longer considered exclusive to human beings.

As I’ve often argued, this century will see a revolution in the way that humans understand the rest of the animal kingdom, realizing that they are far more intelligent than we’ve given them credit for, and this understanding will make it much harder for us—the good ones among us, anyway—to justify killing animals and poisoning the planet generally.