To maintain the crackdown against the illegal dumping of rubbish into the ocean and the illegal sand mining, a joint cruising team consisting of the representatives from Zhongshan Ocean and Fisheries Bureau, Zhongshan Border Detachment, Zhongshan Maritime Safety Bureau, Zhongshan Water Bureau, Zhongshan Dredging Bureau and Zhongshan Transport Bureau patrolled the marine areas of Zhongshan on the morning of June 15^th. Fifty five law enforcement officials took 17 cruisers to check some refuse carriers and dredgers.