Ken Nedimyer is working to save dying coral reefs in the Florida Keys . He and his team are growing coral in nurseries before transplanting them to the wild . Ken : Coral reefs are critical to marine life , many economies . Do you want a hero ? Nominations are open for all CNN affiliates .
Ken Nedimyer is helping to restore dying coral reefs in the Florida Keys . He and his group are growing coral in nurseries before transplanting them to the wild . Nedimyer : Coral reefs are critical to marine life , many economies . Do you know a hero ? Nominations are open for 2012 CNN Heroes .