For a decade or more, scientists have assumed our seas carry millions of tons of plastic, much of which should be floating in open water, forming vast midocean gyres — islands of man-made mess such as the Great Pacific Garbage Patch. The study outlines the findings of scientists who trawled the waters around five large ocean gyres in 2010 and 2011. Carlos Duarte, an oceanographer at the University of Western Australia and co-author of the study, said that the findings mean we cant account for 99% of the plastic that we have in the ocean. The missing plastic could have been eaten by ocean animals