Without significant action, by 2050, there will be more plastic than fish in the ocean by weight.
By 2050, plastic in the oceans will outweigh fish, predicts a report from the Ellen MacArthur Foundation, in partnership with the World Economic Forum.
Part of the reason is that plastic use has increased 20-fold in the last 50 years, and it's continuing to rise.
But we also don't reuse nearly as many plastics as we could, causing them to go into landfills that can then pollute the oceans.
The report helps quantify just how much plastic this is: It's "equivalent to dumping the contents of one garbage truck into the ocean every minute."
But we could prevent this much plastic from ever entering the ocean.
For example, only 14% of plastic packaging is recycled, and it's the biggest source of plastic pollution in the oceans, according to the report.
If we reused more plastic packaging and turned it back into other plastic products, the report concludes, we could significantly decrease the amount that goes into the oceans.