I'm glad you are concerned about waste in our oceans Elianne, we need more inventors like you! Your invention looks great in your drawing, you've shown how the magnets would attract all of the waste in the ocean to help clean up the water, which would make the fish and all other sea life a lot happier! This is a great idea for clearing waste and it would only attract wasteful materials like metal so sea creatures would be safe. Nice work little inventor!