Major islands of the sea include Anmado, Baengnyeongdo, Daebudo, Deokjeokdo, Gageodo, Ganghwado, Hauido, Heuksando, Hongdo, Jejudo, Jindo, Muuido, Sido, Silmido, Sindo, Wando, Yeongjongdo and Yeonpyeongdo (all in South Korea).
Major islands of the sea include Anmado Baengnyeongdo Daebudo Deokjeokdo Gageodo Ganghwado Hauido Heuksando Hongdo Jejudo Jindo Muuido Sido Silmido Sindo Wando Yeongjongdo and Yeonpyeongdo (all in South Korea)