A counterintuitive and compelling argument that existing laws already protect the entirety of our oceans—and a call to understand and enforce those protections.The world's oceans face multiple threats: the effects of climate change, pollution, overfishing, plastic waste, and more. Confronted with the immensity of these challenges and of the oceans themselves, we might wonder what more can be done to stop their decline and better protect the sea and marine life. Such...