'SHELLSHOCKED: Saving Oysters to Save Ourselves' explores the importance and fragility of wild oysters in cleaning water and building ecosystems for other marine life. Today, because of overfishing and pollution, wild oyster reefs have been declared 'the most severely impacted marine habitat on Earth' and no longer play a role in their ecosystems. Now scientists, government officials, artists and high school students are fighting to bring oysters back to the former oyster capital of the world - New York Harbor.