Enteromorpha algae have invaded the waters of Qingdao City, east China's Shandong Province. Photos taken on June 15, 2021, show the algae-covered water along the coast of Qianhai.

The explosive growth of wild green algae in the foreshores can lead to green tides, which can destroy the ecological balance of water, affect the coastal landscape and destroy the aquaculture, among other negative impacts.

The city has issued a blue warning (Level 4) for marine algae disasters and launched a four-level emergency response on Wednesday. Authorities have organized staff to clean up the sea and land to protect the coastal environment.

(All images via VCG)

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