Slimy green algae is taking over China's beaches for an alarming reason

Every summer for the past eight years, huge algae blooms have taken over the beaches near Qingdao, a city in the Shandong province of China.

The bright green stuff has blanketed at least 13,500 square miles of ocean this summer, according to the South China Morning Post.

And this isn't the first time it's happened. In 2013, the blooms got as big as the state of Connecticut! Check out this year's algae infestation.