This study aims to analyze the economic value of marine tourism in South Sulawesi, focusing on coastal areas and small islands, and to evaluate the social impacts and effectiveness of collaborative policies in the sustainable management of marine tourism. The study also seeks to provide strategic recommendations to support more effective and sustainable marine tourism development. The research employs both quantitative and qualitative approaches. Quantitative data is collected through surveys assessing tourists' travel costs and the economic impact of the tourism sector, with a focus on coastal areas and small islands in South Sulawesi. Qualitative data is obtained through interviews with stakeholders, policy document analysis, and case studies of marine tourism destinations to evaluate the success of collaborative policies and the social impacts of tourism. The findings reveal that marine tourism has improved the quality of life for local communities by providing better access to healthcare and education services, and by enhancing living conditions. Additionally, marine tourism plays a role in community empowerment, environmental awareness, and cultural preservation. Collaborative policies in marine tourism management have demonstrated positive results in enhancing destination quality, natural resource management, and local community empowerment.