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This study examines the morphological characteristics and shoreline dynamics of sandy beaches along the Burgas coast, one of the most diverse and human-impacted regions of the Bulgarian Black Sea. By integrating high-resolution Unmanned Aerial System (UAS) photogrammetry, GIS-based morphometric analysis, and historical shoreline data spanning the 1980s to 2025, the research provides a comprehensive assessment of coastal evolution over the past century. Five representative beaches, Sarafovo, Atanasovska Kosa, Burga...