Available adaptation options are unable to offset climate- change impacts on marine ecosystems and the services they provide . Adaptation solutions implemented at appropriate scales, when combined with ambitious and urgent mitigation measures, can meaningfully reduce impacts . Increasing evidence from implemented adaptations indicates that multi-level governance, early-warning systems for climate-associated marine hazards, seasonal and dynamic forecasts, habitat restoration, ecosystem-based management, climate-adaptive management and sustainable harvesting tend to be both feasible and effective . Marine protected areas , as currently implemented, do not confer resilience against warming and heatwaves  and are not expected to provide substantial protection against climate impacts past 2050 . However, MPAs can contribute substantially to adaptation and mitigation if they are designed to address climate change, strategically implemented and well governed . Habitat restoration limits climate-change-related loss of ecosystem services, including biodiversity, coastal protection, recreational use and tourism , provides mitigation benefits on local to regional scales   and may safeguard fish-stock production in a warmer climate . Ambitious and swift global mitigation offers more adaptation options and pathways to sustain ecosystems and their services . 
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report