have been increasing in both incidence and longevity over the past century , with productivity consequences for marine aquaculture , carbon sequestration and local species extinctions  . Temperature increases related to El Niño climatic oscillations have caused mass fish mortalities either through warming waters ) or associated HABs  ). Increases in sea lice parasite infestations on salmon are related to higher salinity and warmer waters  . Ocean acidification is having negative impacts on the sustainability of mariculture production  , with observed impacts on shellfish causing significant production and economic losses for regions, estimated at losses of nearly USD 110 million by 2015 in the Pacific Northwest . Ocean oxygen levels are declining due to climate change , and decreased oxygen  has negative impacts on fish physiology , fish growth, behaviour and sensitivity to concurrent stressors  .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report