The scientist who was branded alarmist for exposing the fate of coral reefs
What he and his colleagues found was that corals had a temperature threshold. Once those temperatures are breached, the corals start to expel the tiny algae that live inside them and give corals their colour and much of their nutrients.
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Rather than having a century or more, the models suggested as early as the 2020s some reefs could be bleaching six or more times a decade – a frequency far too high to give them time to recover.