Sir David Attenborough narrates this landmark eight-hour series about Earth's marine environment.  We know less about the oceans than we do about the surface of the moon, yet the seas cover two-thirds of our world. Blue Planet is a definitive exploration of our planet's oceans and reveals the sea and its inhabitants at their most fearsome and alluring.  From the coasts to the poles, from the reefs to the deep, we travel with behemoths like the blue whale and microscopic creatures, including coral polyps, to experience the oceans as never before.  Behavior captured for the first time with hunting dolphins, killer whales and polar bears makes this series both breathtaking and groundbreaking in its content and scope.   Episodes chronicle the mysteries of the deep and the intrigues of coastal sea mammals; investigate tidal and climatic influences; and depict the creatures and systems that revolve around our "Blue Planet." 

Blue Planet: Seas of Life is the result of a six-year collaboration between Discovery Channel and the British Broadcasting Corporation. The BBC site includes a series of games and interactive experiences.