A Sea of Garbage
In case you have not, Google the Great Pacific Garbage Patch. It is a garbage pile in the Pacific Ocean that stretches off the coast of California, past Hawaii and almost as far as Japan. The size is estimated to be as "small" as the state of Texas up to twice the size of the United States.
It is also referred to as the Plastic Soup as plastic is becoming a large part of the garbage that is circulating the the vortex. The plastic is photo-degrading into polymers that closely resemble zoo plankton, and are eaten by jellyfish thus entering the food chain.
It's amazing we have not heard about this yet in the mainstream media.