I am sure all of that rubbish visible in that picture could be hoovered up in about a day using the correct type of designed vessel. The ocean floors are still covered in many areas with munitions from WW2. If the same effort is expended it can all be reversed, and it can be made to pay. Same as the Keynsian concept of burying $20 notes in a mine for the workers to dig them out. A much better use of money rather then giving to rich fuks to fix CO2. Enough of the hand wringing !!!