Visitors walk on a beach covered by a layer of green algae known as enteromorpha prolifera in Qingdao, Shandong province on June 22, 2014. Local authorities have launched a special team to monitor and clean up the algae. Monstrous quantities of green algae have sprouted in the coastal waters near the city starting from 2008. [Photo: China News Service/ Xu Chongde]
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