One Ocean is an ambitious, provocative and stunning four-part documentary series that portrays the ocean more completely than ever before, revealing its awesome beauty and extraordinary power. The series, special effects and striking pictures shot in HD explores how it is that the ocean holds the very key to all life within its silent and shadowy depths. In each breathtaking episode we bring to life a vast, interconnected ecosystem: from the diversity and significance of microscopic plankton, to the sleek power of the Ocean’s top predators. One Ocean joins expeditions of discovery that take us to tropical coasts, to the deep, churning sea, and to meet strange and mysterious marine life that most of us will never get to see. We reveal a secret world beneath the water’s surface: energized with purpose, order, and the drama of survival. Complex environments inhabited by an astounding array of life forms, alternately splendid and graceful, are revealed like never before. Disarming, bizarre and plainly profound – One Ocean bears witness a world that is at once intricately beautiful and achingly vulnerable.