People look at the art installation "Silvertip Shark" during the exhibition "Washed Ashore: Art to Save the Sea" at the Toronto Zoo in Toronto, Canada, May 19, 2019. Kicked off over the weekend, the six-month-long unique exhibition was aimed at warning of the negative and devastating effects of plastic pollution, sparking positive changes in consumer habits. All the art installations were built completely with plastics collected from oceans and waterways around the world. (Xinhua/Zou Zheng)