The Great Pacific Garbage Patch or Pacific Plastic Vortex is twice the size of Texas and contains a large amount of plastic.
Click image for animated explanation
Unfortunately the plastic photodegrades into tiny polymers that enter the food chain. Besides being carcinogenic, plastic also mimics/disrupts hormone production. Yummy.
Research vessels are now on-site.
Although many dislike having a giant clump of trash in the ocean, I love the garbage vortex. It seems we only move to action when faced with an acute problem.