The Great Bubble Barrier: A proven concept to reduce river plastics and an elegant bubbly solution to a worldwide problem. Too much of the waste that our society produces ends up in the water, where it damages marine and human life. Sea turtles and fish get caught up in plastic, ships are obstructed in their paths, and microplastics form a health hazard for the smallest to the largest organisms. Plastic soup is recognised as a international problem more and more, by both the general public, municipalities, government and the European Union. We believe plastic waste can be caught before it reaches the oceans. The current solutions that stop waste in the rivers have two major drawbacks unfortunately; they block ship traffic and/or hinder fish movement. We searched for an elegant solution that blocks waste in the river, but also allows the passage of fish and ships. And we arrived at a very simple idea; a barrier of bubbles. The Great Bubble Barrier offers a solution for different problem-owners: we can help governments meet changing regulation on waste management in waterways, but also help cities fight plastic problems in their waters and help waterboards to save on their cleanups after high water.