northern and central two-thirds of the Great Barrier Reef were killed in 2015/2016. Subsequent coral recruitment in 2018 was reduced to only 11% of the long-term average, representing an unprecedented shift in the ecology of the northern and middle sections of the reef system to a highly degraded state. A second key example are sea- ice-dependent systems in the Arctic. During August to October of 2010-2019, corresponding to a global warming of about 0.9°C, average Arctic sea ice area has declined in area by 25% relative to 1979-1988 . September Arctic sea ice volume has declined by about 72% between 1979 and 2016, with the latter deemed a conservative estimate .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report