| An activist shows an invertebrate moss animal or bryozoa that was taken from the Nakdong River in Dalseong-gun, Daegu, Monday. Environmental groups claim the species is proliferating in the river since dams were built as part of the four-river refurbishment project during the Lee Myung-bak administration. They claim this is another indication that the river project has ruined the ecosystem of the river, but the environment ministry says the species is not harmful to humans. / Yonhap |