To help save marine life, a craft beer company developed edible 6-pack rings. Florida’s Saltwater Brewery wanted to help protect the ocean from plastic pollution, so they created the rings from beer byproducts and made them completely safe for both humans and animals to eat. Source

source http://kianorshahmohammadi.com/post/154527018840

From http://dentaleconomicsus.blogspot.com/2016/12/did-you-kno-to-help-save-marine-life.html