Map showing where high amounts of plastic were found

Caption from Oceanus magazine, Vol. 48, No. 2, pg. 21:
Red and yellow areas show where high amounts of plastic were found. About 83 percent of all the plastic debris was concentrated in the North Atlantic subtropical gyre (marked by the black contour line) Strong currents such as the Gulf Stream flow clockwise around the gyre. Inside the contour line, water moves slowly.
Image Of the Day caption:
Surface currents flow clockwise in the North Atlantic Ocean, forming the circular pattern called the North Atlantic subtropical gyre (black contour line) In 2010, scientist Kara Lavender Law of the Sea Education Association and WHOI scientist Chris Reddy published the results of study of floating plastic debris in the western North Atlantic. It was based on 22 years of sampling done by SEA students who used nets to collect plastic particles in the ocean as the students sailed in the North Atlantic. Water flows faster outside the line and more slowly inside, which causes most of the floating plastic to concentrate inside the gyre. (Image courtesy of Chris Reddy, © Woods Hole Oceanographic Institution)