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| A tourist covers himself last week with algae that has invaded a beach in Qingdao, Shandong province. Mi Tongxi / for China Daily |
After a week's cleaning efforts, the biggest algae outbreak since 2008 in the coastal waters near Qingdao, Shandong province, is under control, with tourists and locals swarming to the beach once more.
Experts estimate that the algae will thoroughly vanish before August as the temperature rises.
Han Peijin, director of the No 6 sea bathing beach of Qingdao, is used to dealing with the algae every summer, and he is optimistic about the situation.
"More than 10,000 people came here on Sunday, and you could barely see the algae today," he told China Daily on Monday. "The algae blooms last less than a month, and it's under control now."
Local authorities have launched a special team to monitor and clean up the algae. Since June 8, 24,400 meters of netting has been laid in waters around the coasts of major tourist attractions, 230 fishing boats have collected 22,000 metric tons of algae, and 51,072 tons of algae brought ashore by waves has been removed by bulldozers. A large number of university students also volunteered to clean up the beach.
Liu Tao, an algae expert at the Ocean University of China, said the algae - or enteromorpha prolifera - will not survive when the water temperature goes above 23 C. Thus far, the water temperature is 19 C, "therefore although it looks well today, we still have to keep alert," he said.
"Besides, a large amount of precipitation will also kill the algae. A lack of rain is part of the reason for this year's outbreak."
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