This book pioneers a community-based, people-centered approach to the ocean, bridging research, education, and social practice. Developed through collaboration between the Ocean Policy Research Institute of the Sasakawa Peace Foundation, the Taiwan–Japan Alliance of Local Revitalization and Social Practice (TJ Alliance). It presents methodologies, evaluations, and case studies of ocean-link initiatives rooted in social responsibility. Addressing challenges and opportunities in coastal regions and industries, the book explores innovative forms of blue impact and their assessment from social and environmental perspectives. It underscores how partnerships among universities, think tanks, and communities foster sustainability and positive societal change.