

A boy swims in the algae-filled coastline of Qingdao, Shandong province in China, July 15. China Daily/Reuters
A child plays in seawater covered by a thick layer of green algae at a beach on July 17, 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 but may threaten marine life and coastline tourism. Feng Lin/ChinaFotoPress/Newscom
People play on the beach covered by green algae in Qingdao in east China's Shandong province on Saturday. Green algae continues to spread in waters off China's east coastline. Although the green algae is not poisonous, it can hinder fisheries and tourism.
People play in seawater covered by a thick layer of green algae at a beach on July 17, 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.
A child plays in seawater covered by a thick layer of green algae at a beach on July 17, 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.
A child plays in seawater covered by a thick layer of green algae at a beach on July 17, 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. Yi Yong/ChinaFotoPress/Newscom
People play on the beach covered by green algae in Qingdao in east China's Shandong province on July 16. Green algae spread in waters off China's east coastline. Although the green algae is not poisonous, it can hinder fisheries and tourism in affected areas.
People remove the green algae on the seashore in Qingdao City, east China's Shandong Province, Tuesday. The green algae may continue to spread northward of China's east coastline in the following days, according to local oceanic administration
People play on the beach covered by green algae in Qingdao in east China's Shandong province on July 16. Green algae spread in waters off China's east coastline. Although the green algae is not poisonous, it can hinder fisheries and tourism in affected areas.
The sea and the algae off the coastline of Qingdao, east China's Shandong Province. The North China Sea Marine Forecasting Center of State Oceanic Administration forecasted that the green algae would continue spreading northward and some would be washed ashore from July 26 to 28