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,

At nearly 99 years old, Sir David Attenborough has walked through jungles, scaled mountains, and weathered deserts. But as he marks the eve of his hundredth year, the legendary broadcaster and naturalist has turned his gaze to what he now calls the most important place on Earth — not the forests or the savannahs,