Attenborough explores the planet's undersea habitats, revealing the greatest age of ocean discovery and emphasizing the ocean's vital importance while exposing its problems and highlighting opportunities for marine life recovery.
Richard O'Barry 路易·西霍尤斯 Hardy Jones Michael Illiff Joji Morishita Ian Campbell Paul Watson Doug DeMaster Dave Rastovich Charles Hambleton Hayato Sakurai Mandy-Rae Cruikshank Kirk Krack 伊莎贝尔·卢卡斯 海顿·潘妮蒂尔