The new documentary explores the secrets and vital roles of Earth’s seas: its wonders, challenges, and the potential for recovery.

Crashing waves, glistening sea spray, a calm expanse of deep blue. These are the images that open “Ocean with David Attenborough,” the veteran broadcaster’s latest film. After decades of sharing stories of life on our planet,

British biologist Sir David Attenborough will celebrate his 99th birthday two days after the publication of his latest book, “Ocean: Earth’s Last Wilderness,” co-written with long-time BBC collaborator Colin Butfield.