Their research shows around one-third Great Barrier Reef had its ecology transformed - and it may never fully recover. That's leading to questions about what should be done now.

Labor is opposing govt plans to cut the total number of 'green' conservation areas in marine parks. (AAP) Source: AAP
Their research shows around one-third Great Barrier Reef had its ecology transformed - and it may never fully recover. That's leading to questions about what should be done now.