Throughout the ocean, whales depend on sound to mate, find food, migrate, and defend against predators. A century ago the seas were silent, but now humans fill them with an unbearable cacophony – the sonic “bombs” of oil prospectors, the whirr of freight ships, the shrieks of military sonar – driving whales to death and disorientation. Sonic Sea, narrated by Rachel McAdams and featuring Sting, tells the story of Ken Balcomb, a former Navy officer who solved the tragic mystery of a mass stranding, and the global network of scientists working to limit our deadly clamor.

Directed by Michelle Dougherty and Daniel Hinerfeld.