One not so small problem needs to be addressed, There is an "island" in the middle of the Pacific Ocean that consists of mostly plastic shopping bags. How big is it? Wrap your mind around this: it is tens of miles long and almost the same in width. Hawaii is considerating banning them state-wide. Maui, Lanai and Molokai (the county of Maui) has a total ban in place already. And no, they are not dissolving in the water nor by UV from the sun. It is traceable by satellite and shipping is given location data constantly so that it can be avoided to avoid the severe problem of fouled ship propellers.