According to the Working Group II contribution to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), small-scale fisheries livelihoods and jobs are the most vulnerable to climate-driven changes in marine resources and ecosystem services. The abundance and composition of their harvest depend on suitable environmental conditions and on Indigenous knowledge and local knowledge developed over generations.
Large-scale fisheries, though still vulnerable, are more able to adapt to climate change due to greater mobility and greater resources for changing technologies. These fisheries are already adapting by broadening catch diversity, increasing their mobility to follow shifting species, and changing gear, technology and strategies. Adaptation in large-scale fisheries, however, is at times constrained by regulations and 43 governance challenges.
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https://reliefweb.int/report/world/climate-change-2022-impacts-adaptation-and-vulnerability