An ecological study was conducted on the benthic macrofauna at Cheokjeon tidal flat in Korea. Researchers collected samples over two years to study the community structure. They found a total of 111 species, with polychaetes, molluscs, and crustaceans being the most common. Bivalves and holothuroideans were the dominant groups in terms of biomass. Samples were categorized into three stations and four faunal groups based on their composition. Different species were found to specialize in different tidal flat elevations, with some preferring high elevations and others low elevations.