In 2012, New Zealand built a floating wetland with 20,000 native plants and nearly 500,000 recycled bottles; it was expected to remove five tonnes of lake nutrients yearly

In a groundbreaking endeavor, Lake Rotorua embraced a massive floating wetland crafted entirely from recycled plastic bottles. This creative solution was designed to combat nutrient pollution in the lake’s ecosystem. With around 500,000 bottles and 20,000 plants, the installation effectively extracted notable quantities of nitrogen and phosphorus each year. Unfortunately, after a decade of service, it was dismantled due to severe storm damage.
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