The researchers studied the macrobenthic community around Sorido Island in Korea from August 1996 to April 1997. They found a total of 217 species, with polychaetes, crustaceans, and mollusks being the most common. The main species were Tharyx sp., Lumbrineris longifolia, and Magelona japonica, which thrive in areas with organic pollution. The study area was divided into four regions with different types of macrofauna. They also discovered a link between sediment pollution and the abundance of certain species like Ampeliscidae spp. and Amphipoda.