News Major new threat to Great Barrier Reef identified 17/10/2023 FacebookTwitterEmail Scientists have identified a new threat to the Great Barrier Reef. Picture: Appleton Studios/Tourism Australia. by Tracey Ferrier, AAP Scientists have identified a major new threat to the Great Barrier Reef - invisible groundwater flows delivering nutrients at harmful […] Subscribe or Login to see the rest of the content. Username Password Remember Me Forgot Password