Humpback whales, working in teams, circle herring with disorienting curtains of bubbles off Alaska’s coast, then shoot up from below with their mouths open. This innovation developed among unrelated groups of humpbacks but is now a widely adopted practice.

Humpback whales, working in teams, circle herring with disorienting curtains of bubbles off Alaska’s coast, then shoot up from below with their mouths open. This innovation developed among unrelated groups of humpbacks but is now a widely adopted practice. (Photo by Brian Skerry)