Coast as systems-of-systems from the Smithsonian

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Coasts shelter 70 percent of the world’s people. But they’re under attack from pollution, invasive species, and the steady march of climate change. Smithsonian biologist Andrew Peresta narrates how they protect us, and how ecologists are working to protect them.

Shallow-water seagrasses can’t survive without enough light. And fish, shrimp, crabs and other creatures we rely on for food can’t survive without seagrasses. Smithsonian biologist Chuck Gallegos describes how pollution is putting all of them in danger.

View more Ecosystems on the Edge videos and learn how you can help at http://ecosystems.serc.si.edu. Created by the Smithsonian Environmental Research Center.

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