This epic-length box set features the two most acclaimed nature series ever produced, each one a brainchild of maverick British producer Sir David Attenborough: The Blue Planet: Seas of Life and Planet Earth. Seas finds producer Alastair Fothergill teaming up with the BBC Natural History Unit on a cinematographic tour of the world's oceans, that took over five years to film and won two Emmys. As the even more ambitious follow-up, Earth offers a spectacular examination of the diversity of our biosphere and its species, repeatedly pondering the chasm between the micro and macroscopic.