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Sea is a wealth of nature that contains a wide variety of resources, for living things. Marine health is an important thing that must be maintained for sustainable living. Marine Litter is a waste from land that goes into the sea and disrupts the ecosystems of marine health, especially materials that cannot decompose such as plastics, glass, and others. The purpose of this research was to determine the waste’s composition and density based on the type of material and to know the trend of type and concentration of marine litter. A sampling of marine litter at Baiya Beach followed the criteria according to the guidance survey of marine litter on the beach. Baiya Beach is located in Palu Bay and meets the criteria in the monitoring of marine litter. The results obtained, there were 10 meso types of wastes (0.5-2.5 cm) that dominated by woods, plastics, and glasses &amp; ceramics with density of 57.83 pieces m −2 , 20.79 pieces m −2 , 19.90 pieces m −2  respectively, while the macro type (&gt;2.5cm) contained 25 types that dominated by plastic, wood, and other materials (sanitary) with a density respectively of 9.72 piece m −2 , 3.40 piece m −2 , 160.32 piece m −2 . These results showed that the type and quantity of litter are generally derived from human activity.

Marine litter’s composition and density at Baiya Beach in Palu Bay