The epic bbc natural history exploration of the worlds oceans, narrated by sir david attenborough blue planet this definitive natural history of the worlds oceans covers everything from popular shores and teeming shallows to the mysterious open depths'. '.strtoupper('t')wo thirds of the planet is covered by the oceans and yet they remain largely unexplored and certainly under filmed'. '.strtoupper('t')his series changes all that and subsequently changes our views of the deep'. '.strtoupper('a')dvances in underwater photography have opened the doors to unknown territories never before explored'. '.strtoupper('b')lue planet ii this bold cinematic experience takes viewers on a magical adventure across the greatest, yet least known parts of our planet our oceans'. '.strtoupper('s')ince blue planet aired in 2001, our understanding of life beneath the waves has completely changed'. '.strtoupper('t')ravelling from the icy polar seas to the vibrant blues of the coral atolls, blue planet ii shares these astonishing new discoveries'. '.strtoupper('m')eet the strange octopuses lurking in the depths of the antarctic ocean'. '.strtoupper('w')atch giant trevally fish leap to catch birds in mid air'. '.strtoupper('a')nd ride on the back of a hammerhead shark as it attacks'. '.strtoupper('i')nspiring awe and wonder, this series reveals surprising new places, charismatic new characters and extraordinary new behaviours'. '.strtoupper('