Chinese fishermen in their boats pitch in to help clean up the coast of Qingdao, east China's Shandong province about 550 kilometres (340 miles) southeast of Beijing on July 1, 2008, where a bright green covering of algae smother beaches and extending several hundred metres (yards) into the sea. China's pledge to stage a "Green Olympics" has taken on a worrying meaning at the sailing-venue city of Qingdao, where an algae bloom has spread along the coastline. Getty Images logo Getty Images 44 months ago

Chinese fishermen in their boats pitch in to help clean up the coast of Qingdao, east China's Shandong province about 550 kilometres (340 miles) southeast of Beijing on July 1, 2008, where a bright green covering of algae smother beaches and extending several hundred metres (yards) into the sea. China's pledge to stage a "Green Olympics" has taken on a worrying meaning at the sailing-venue city of Qingdao, where an algae bloom has spread along the coastline.