For all the cheap convenience it affords us in day-to-day life, the long-term cost of using plastic is staggering. More than 165 million tons of discarded plastic waste are in the world’s oceans and pose a serious threat to marine life.

Scotland-based inventor and Durham University chemistry graduate James Longcroft is currently fundraising a potential solution. His company, Choose Water, is offering a biodegradable water container that Longcroft claims will decompose within three weeks. Made from recycled paper and a proprietary waterproof inner lining, the bottle is intended for a single use. Longcroft claims it will begin decomposing after being discarded in water or a landfill. The steel cap will rust and take about a year to erode completely.

The company’s methodology for making the bottle is being kept under wraps for now: On his Indiegogo campaign page, Longcroft says that he’s waiting for patent approval before offering any further explanation. Business Insider requested a bottle to test, but the company declined, citing concerns over trade secrets.

If fundraising is successful, Choose Water hopes to be in stores by the end of 2018. (At press time, the campaign had reached roughly half of its $34,000 goal.) The company says all profits will be donated to Water for Africa, a charity providing clean water solutions.

[h/t Business Insider]