There are an estimated 5.25 trillion pieces of plastic waste in our oceans. 269,000 tons of floating debris, 4 billion microfibers per square kilometer floating underwater. 70% of our trash sinks into marine ecosystems, 15% floats in the sea, and 15% ends up on our beaches. The idea of making a submarine instantly sparked our groups interest. As we researched more we realized that we could use a submarine to solve a world wide problem. Trash in the ocean. While some submarines insert trash into the ocean using "Trash Disposal Units," The Sub Above removes trash.Â