The Rouwno Giant Clam Garden was a coastal area within the utilization zone of Cenderawasih Bay National Park (TNTC) with high potential for the development of conservation-based marine ecotourism. This study purpose was to assess the area's suitability as an ecotourism destination using the Tourism Suitability Index (TIC). Data collection was conducted through direct observation of biophysical parameters such as clam species, coral cover, depth, clarity, current velocity, beach type, and other aquatic ecological characteristics. Four clam species and coral reef conditions were found, with an average coral cover of 74%, indicating a good coastal ecosystem. The TIC of 2.445 placed the Rouwno Giant Clam Garden in the "Suitable" category for marine ecotourism, particularly snorkeling and educational tours of clams. However, several factors, such as beach width, remain limitations that require consideration in management planning. Overall, this area had strong potential for development as a conservation-based ecotourism destination involving local communities.