recyclable polyethylene ball, 可回收聚乙烯球

Sydney, Australia
A child at The Beach – a 60-metre installation filled with 1.1m recyclable polyethylene balls at the Sydney festival
Photograph: Mick Tsikas/AAP
Best photographs of the day: Vatican celebrations and Epiphany in Spain | News | The Guardian
https://www.theguardian.com/news/gallery/2017/jan/06/best-photographs-of-the-day-vatican-celebrations-epiphany-spain