-20%) due to a greater proportion of fish occurring in the high seas , while projected increases have been anticipated for Ascension Island and Saint Helena in the South Atlantic . Additionally, seafood plays an important role in achieving food security in many islands. In the Pacific, fish protein is estimated to make up 50-90% of animal protein consumption in rural areas and 40-80% in urban areas  with similar values reported for some Indian Ocean and Caribbean islands . It has been suggested that island nations may need to retain more of their tuna catch rather than to rely solely on coastal fisheries to achieve food security in the future . Furthermore, small island fisheries can be severely impacted by extreme events such as TCs, yet rapidly recovering pelagic fisheries can help to alleviate immediate food insecurity pressures in some circumstances, helping to build resilience .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report