This study aims to analyze the relationship between mangrove density and the abundance of mud snail (Cerithidea cingulata) in Concong Luar Village, Concong Subdistrict, Indragiri Hilir Regency. The research was conducted from March to May 2025 at three observation stations representing different mangrove conditions, ranging from natural areas to sites adjacent to settlements. A purposive sampliā¦