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.
Narrated by Quannah Chasinghorse, an adventurous journey down the Colorado River that explores the region's extraordinary wildlife, cultural history, and uncertain future.
简介： 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.
