It's not a good time to be living in the ocean. Aside from oil spills and the scourge of plastics pollution, the seas are becoming ever more acidic due to humanity's CO2 flooding the atmosphere. The altered PH of the water makes for a bevy of problems, from making fish act in really weird ways to dissolving the shells of creatures critical to the marine food chain.
But a group of scientists from the University of Vermont and elsewhere think the ocean's future health has one thing going for it: the restoration of whale populations. They believe that having more whales in the water creates a more stable marine environment, partly through something called a "whale pump" — a polite term for how these majestic animals defecate.