When changing CO2 concentrations affect marine ectotherms, they typically combine additively or synergistically with warming  , and their cumulative effects can lead to detrimental, neutral or beneficial effects  . Higher ocean CO2 influences the thermal tolerance of species adapted to extreme but stable habitats in tropical and polar regions, more than that of thermally tolerant generalists  , especially in early life stages . In thermal generalists from temperate and subtropical species, warming and ocean acidification generally have detrimental effects on growth and survival , but warming can also alleviate the detrimental effects of ocean acidification by increasing metabolic rate and/or growth , provided that other conditions  are beneficial. For example, larval growth and survival of Australasian snapper  appear to benefit from combined acidification and warming , introducing major uncertainties to population modelling .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report