As a marine biologist, explorer, author, and lecturer, Sylvia Earle has dedicated her life to advocating for the world’s oceans. In this TED Talk, Earle emphasizes the importance of oceans to maintaining human life and the linkages between human actions and ocean health, especially in the face of climate change, pollution and exploitation. She encourages all viewers to support a global network of marine protected areas. Photo credit: oceanelders.org
