Abstract The presence of gastropod is related to the seagrass condition. A study purposes to understand the relationship between seagrass and gastropod densities in the Teluk Bakau Beach Bintan, Bintan Regency Riau Islands has been conducted in April-May 2022. There was a survey method with three stations, namely the area close to human inhabitant (St1), ecotourism area (St2), and natural area…