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video: http://www.youtube.com/watch?v=ZMNLDHpbN-M
Link and video: http://www.livescience.com/37987-algae-bloom-swamps-chinese-beaches.html
LiveScience said:Carpets of bright green algae have overwhelmed beaches in eastern China's Shandong province due to this summer's huge Yellow Sea bloom.
Video footage from the resort city of Qingdao showed bathers braving the algae infiltration, swimming among stringy mats and carrying out handfuls of the material, known as "sea lettuce" in China, according to The New York Times.
This type of green algae, enteromorpha prolifera, is not toxic to people, but it can suck up huge amounts of oxygen, choking marine life. And when it rots, it can smell quite foul.
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Warm sea temperatures and pollution are thought to fuel the algae growth, as the organisms can feed on nutrients like phosphates and nitrates in fertilizer runoff and sewage.