Ecosystems on the Edge: Underwater Light and Seagrass

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