China's largest algal bloom turns the Yellow Sea green The algae, which can suffocate marine life, is thought to be caused by pollution from agriculture and industry Karl Mathiesen guardian.co.uk, Thursday 4 July 2013 12.46 EDT static.guim.co.uk/sys-images/Guardian/Pix/pictures/2013/7/4/1372928237325/91fb3c94-086c-4470-a98e-23ec4ff993d8-460x276.jpeg http://www.guardian.co.uk/environment/2013/jul/04/china-algal-bloom-yellow-sea-green