This TED video talk is by Capt.Charles Moore who discovered the 'Great Pacific Garbage Patch'; an endless floating waste of plastic rubbish in the North Pacific Gyre. He started the Algalita Marine Research Foundation and captains the foundation's research vessel, the Alguita, currently at sea once again, documenting the great expanses of plastic waste that now litter our oceans.
Meanwhile there is plastic floating downstream everyday in the Regents Canal ... heading out to sea.