CBC - The Nature of Things: Ocean Magic at Night (2016) 720p HDTV x264-aAF

Cameraman and marine biologist Rick Rosenthal captures for the first time on camera Earth's biggest migration — the nightly movement of billions of animals from the ocean's depths to its surface and back. Ocean Magic at Night reveals for us the habitat of the dark open ocean. It is a world without solid objects, like deep space, whose bizarre inhabitants live out their lives suspended in darkness between the surface and the abyss. Each evening they travel up towards the surface to feed, and at dawn back down again to the safety of deep, dark water. Locating this migration in the vast emptiness of the open ocean, and at night, is not easy. Capturing it on camera has never been done before. Rick Rosenthal has made it his mission.