A scientific investigation ship leaves a port in Qingdao West Coast New Area yesterday. The ship, named Science-3, together with another three counterparts, namely Chuangxin-1, Chuangxin-2 and Shiyan-2, yesterday set sail from Yantai and Qingdao cities in East China’s Shandong Province, and Guangzhou in Guangdong Province. Their missions are to conduct comprehensive investigations on waters, including the Bohai, the Yellow Sea and the mouths of both the Yangtze and Pearl rivers. Those voyages aim to provide data backup for research on marine ecological protection. Xinhua