The CLIMAREST project – Coastal Climate Resilience and Marine Restoration Tools for the Arctic Atlantic basin – integrates multiple expertise into a holistic approach, to develop a toolbox designed to establish guidelines for ecosystem restoration and to enhance climate resilience in coastal communities. The concept is to develop, test (in 5 demonstration sites, ranging from the high-Arctic Svalbard (79° N) in the North to the Madeira archipelago (33° N) in the South) and optimise a modular toolbox that integrates expert knowledge, scientific information, multilevel stakeholder and community involvement, ecosystem service improvement analysis, cost-benefit analysis, priority of actions, and custom designed protocols for restoring and monitoring multiple coastal habitats.