QINGDAO, CHINA - JULY 06: (CHINA OUT) A fisherman cleans up seaweed which has covered a beach on July 6, 2011 in Qingdao, Shandong Province of China. A large area of green seaweed called enteromorpha... more 
QINGDAO, CHINA - JULY 06: (CHINA OUT) A fisherman cleans up seaweed which has covered a beach on July 6, 2011 in Qingdao, Shandong Province of China. A large area of green seaweed called enteromorpha prolifera, has approached the Qingdao coast. The algae, is non-poisonous and harmless for water quality but may threaten marine life and coastline tourism. (Photo by ChinaFotoPress/Getty Images) less 
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Getty Images | Photo By ChinaFotoPress / Getty Images
Thu, Jul 7, 2011 12:50 AM EDT