Hakdong Mongdol Beach (학동흑진주몽돌해변)

Hakdong Mongdol Beach is one of Korea's most distinctive beaches, made entirely of polished black pebbles ('mongdol') instead of sand — a coastal type found in only a few locations along the Korean coast. Located on Geoje Island, the beach has clear water, surrounding pine forest, and a unique soundscape of waves rolling pebbles. The 'black pearl' branding leans into the polished-stone aesthetic. For travelers visiting Geoje and wanting an unusual coastal experience beyond standard sand beaches, Hakdong Mongdol is one of the strongest single picks.