A small brewery is making the rings that hold their cans from leftover barley and malt. These new rings can be eaten by sea life or simple decompose.
Article:
http://blogs.discovermagazine.com/d-brief/2016/05/18/edible-six-pack-rings/#.Vzz5OZErKUk
Brewery homepage:
http://www.saltwaterbrewery.com/home
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