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,

Today, Sir David Attenborough turns 99. That alone is remarkable. But somehow, it feels even more fitting that he’s marking the occasion not with a retrospective or a quiet celebration, but with the release of a brand-new documentary.