The people who are qualified to answer say this: "Coral reefs, for example, are projected to decline by a further 70–90% at 1.5°C (high confidence) with larger

The people who are qualified to answer say this: "Coral reefs, for example, are projected to decline by a further 70–90% at 1.5°C (high confidence) with larger losses (>99%) at 2ºC (very high confidence)." https://www.ipcc.ch/sr15/chapter/spm/ https://www.ipcc.ch/sr15/chapter/spm/ (We're on track for at least 3°C warming.) In other words: It is extremely unlikely coral reefs will survive at all.