Sea grass ecosystem in the Madong Bay is inhabited by numerous aquatic organisms, including bivalve. A research aims to determine the community structure of bivalve in that seagrass ecosystem has been conducted in July 2019. There were 3 stations, in the rivermouth, in the bay and in the sea. In each station, there were 2 transect lines (25 m length), and distance between the line was 15 m. In …