Australian Broadcasting Corporation: MARK COLVIN: Queensland researchers say rising carbon dioxide levels are causing worsening health effects for fish living on the Great Barrier Reef. A James Cook University study has found the changed water quality is affecting the eyesight of some reef fish.
A conservation group says the findings are a further reminder of the extraordinary pressure being placed on the reef.
Caitlyn Gribbin has more.
CAITLYN GRIBBIN: The Great Barrier Reef is a case study for climate change and its impact....