In Boseong-Suncheon Getbol, mud flats are dominant as they have been formed furthest from the Geumgang River system, the origin of suspended sediments. The characteristic of the tidal flat’s particles is that they are finer than the other components of the serial properties. Developed salt marshes and halophyte colonies are observed at the estuary where fresh water from the river flows into the sea. This is because wide salt marshes and halophyte colonies are observed in Boseong-Suncheon Getbol.

Boseong-Suncheon Getbol supports 188 species of benthic diatoms, around 23 species of marine algae, around 445 species of macrobenthos, 120 species of waterbirds with estimated population of 270,000 individuals. The characteristic of the tidal flats is that the habitat diversity is less than that of other components. Most of the tidal flats are made up of mud flats, except for Jangdo Island area. However, the development of salt marshes composed of halophytes and reeds provide natural home through the production of organic matters and a hiding place for organisms in the tidal flats, protecting them from predators and the sunlight, thereby increasing the diversity of species.