Daebudo Tidal Flat comprises two tidal flats, Sangdong and Goraetburi, on Daebu Island in the Yellow Sea. The Site is a key stopover and feeding ground for the migratory waterbirds on the East Asian-Australasian Flyway (EAAF). It supports numerous marine species including over 100 macrobenthic species which are notably abundant; this macrobenthic community serves as an important food resource for the migratory waterbirds passing through the Site each year. Of the various species that the Site supports, some are globally or nationally threatened such as the globally endangered black-faced spoonbill (Platalea minor), the globally vulnerable Chinese egret (Egretta eulophotes) and the nationally vulnerable milky fiddler crab (Uca lactea). Owing to its significance in sustaining the migratory waterbirds, the Site was designated as a Wetland Protected Area under the Wetland Conservation Act in 2017. The Ansan City government is committed to implement the protected area management plan to accelerate its protection measures.