Themed art exhibition held in Qingdao to greet upcoming World Oceans Day

A volunteer introduces art works made of ocean trash to visitors in Qingdao, east China's Shandong Province, June 5, 2019. A themed art exhibition was held at Haichang Ocean Park in Qingdao on Wednesday, to greet the upcoming World Oceans Day. (Xinhua/Li Ziheng)