Fishermen watch the sea water which is polluted by heavy oil on the Miaowan Island in Zhuhai, South China's Guangdong province, Aug 26, 2015. About 200 square meters of sea water around the Miaowan Island, which has been polluted by heavy oil since Aug 23, is almost cleaned up by a professional decontamination team as of Aug 27. Local maritime bureau is making an effort to trace the source of the heavy oil. [Photo/Xinhua]