The 4th European Marine Board Forum brought together Arctic stakeholders from multiple sectors (science, industry, policy & governance, NGOs, etc.) to: Discuss current trends and patterns of change in Arctic Ocean ecosystems, including human activity; Identify possible “2050” scenarios for Arctic Change and the corresponding implications for human health and well-being; Highlight key research gaps, needs and challenges in support of understanding, mitigating against, or adapting to Arctic change; Stimulate dialogue across sectors to aid common understanding, collaborative actions and…