Diversity of gastropods as bioindicator of the coastal waters of Inner Ambon Bay

Abstract The beach in Inner Ambon Bay is used by coastal communities to carry out various activities including household waste disposal, fishing and tourism. These cause the entry of into water bodies resulting a decrease quality. This will lead pollution on coast if left unchecked. One resources living gastropods which are generally able describe waters conditions, so their presence can be as an indicator for determining study aims determine diversity conditions Halong waters. research was conducted 2022 Gastropods were collected using belt transect method with distance between transects 50 m. identified morphologically standard literature book. Analysis species density ecological index gastropods. condition determined STORET ABC curve method. results showed that consist 3 orders, 13 families, 16 genera 28 highest belongs Cortica herbs . Diversity evenness gastropod area categorized moderate low dominance. physical, chemical biological parameter indicate moderately polluted.