Tourists are seen along the beach in Qingdao, east China's Shandong Province, July 17, 2021. The biggest algae bloom in history has hit Qingdao, a port city in east China's Shandong province, covering 1,746 square kilometers of the Yellow Sea, authorities said. The figure is 2.3 times the size in 2013, the second most serious year, according to data provided by the North China Sea Marine Forecasting Center of the Ministry of Natural Resources. The algae bloom has affected the tourist city for 15 years in a row. (Xinhua/Li Ziheng)
