We won't be able to protect the Great Barrier Reef unless we fix water quality

Climate change is the biggest threat to the Great Barrier Reef, but other threats are making it harder for the reef to adapt to warming seas.Water quality is one of them. For over 20 years, scientists have been monitoring water quality on the reef in the effort to improve its health, and the latest scientific consensus report has just been released. To find out why water quality matters, and how it is changing on the reef, we speak to Dr Katharina Fabricius from the Australian Institute of Marine Science.Image: Sheila Dee.