<![CDATA[Coastal areas play a strategic ecological, social, and economic role, yet they are increasingly under pressure from marine debris. Dampyak Beach in Kramat Subdistrict, Tegal Regency, is a coastal area utilized for fishery-related activities that potentially generate marine debris; however, no quantitative study on its coastal cleanliness had previously been conducted. This study aimed to identify the types of marine debris, determine the amount and composition of debris, and analyze the level of coastal cleanliness at Dampyak Beach using the Coastal Cleanliness Index (Clean Coast Index/CCI) approach. This research employed a quantitative case-study method. Primary data were collected through field surveys using a purposive sampling technique along a 100 m transect parallel to the shoreline. The transect was divided into five 20 m sections, and within each section, a 5 m × 5 m sub-transect was established for marine debris sampling, while secondary data were obtained from relevant scientific literature. A total of 240 debris items weighing 6,923 g were recorded, dominated by plastic (69.17%; 166 items), followed by plastic foam (10.83%) and rubber (10.42%), with an overall debris abundance of 1.92 items/m². The Clean Coast Index value, calculated from plastic and foam debris, was 30.72, classifying Dampyak Beach into the "very dirty" category. These findings indicate that Dampyak Beach is heavily polluted by plastic-related debris and requires prompt, sustained coastal waste management intervention involving the local government and community]]>
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