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.
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剧情介绍：
Attenboroughexplorestheplanet’sunderseahabitats,revealingthegreatestageofoceandiscoveryandemphasizingtheocean’svitalimportancewhileexposingitsproblemsandhighlightingopportunitiesformarineliferecovery.
