ABSTRACT This research was conducted in January 2021 in the Coastal Area of Pantai Cermin and Perbaungan Districts, Serdang Bedagai Regency. The purpose of this study is to analyze shoreline changes from 1985 to 2021 and predict shoreline changes for 2040 in the Coastal Area of Pantai Cermin and Perbaungan Districts, Serdang Bedagai Regency. The method used is a survey method. The analysis…