Great Barrier Reef: 30% of coral died in 'catastrophic' 2016 heatwave https://www.theguardian.com/environment/2018/apr/19/great-barrier-reef-30-of-coral-died-in-catastrophic-2016-heatwave #Naturaldisastersandextremeweather #GreatBarrierReef #Australianews #Climatechange #Environment #Marinelife #Queensland #Oceans #Coral