A visitor is seen among green algae in Qingdao, east China's Shandong Province, on June 29, 2010. Local authorities and residents in Qingdao City have been struggling to remove a large mass of green algae that has come ashore on the beaches of the popular coastal tourist destination in Shandong. The North China Sea Branch (NCSB) of the State Oceanic Administration said Monday that the floating green algae covered a 400-square-km area in the waters to the south of Qingdao. [Xinhua]