Oceanography The Official Magazine of
The Oceanography Society
Volume 32 Issue 02

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Volume 32, No. 2
Pages 170 - 180

ROGER REVELLE COMMEMORATIVE LECTURE • Sustainability in Deep Water: The Challenges of Climate Change, Human Pressures, and Biodiversity Conservation

Lisa A. Levin
First Paragraph

Why Focus on Deep Water? The ocean covers 71% of our planet, but few people realize that most of the ocean consists of deep water, with an average depth of 3,800 m (nearly 2.4 miles). Because of their great depth, deep-ocean waters (below 200 m) represent over 95% of the volume on Earth that is habitable for animal life as we know it. This realm, largely out of sight and poorly explored, remains one of planet Earth’s final frontiers. 


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