Globally, there is overall high confidence that suitable shellfish aquaculture habitat will decline by 2100 under projected warming, ocean acidification and primary productivity changes, with significant negative impacts for some regions and species before 2100 . Shellfish growth will increase with warming waters until tolerances are reached, such as through extreme El Niño events  . Rising temperatures and ocean acidification will result in losses of primary productivity and farmed species from tropical and subtropical regions, and gains in higher latitudes  , but net marine production gains could be achieved under strong mitigation . Shellfish Vibrio infections will increase with warming waters and extreme events, increasing shellfish mortalities  , with ocean acidification impairing immune responses  . Bivalve larvae are known to be highly vulnerable to ocean acidification  , with projected regional and species-specific levels of impact   . Ocean acidification is also projected to weaken shells, affecting productivity and processing   and dependent livelihoods .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report