This is a LOT (but fortunately less than thought before)

 

A short science article puts the amount of plastic in, and going into, the oceans in a fascinating and frightening perspective.

A new census of plastic debris entering the ocean

"On the basis of observational data of the amount of plastics entering the ocean each year and model predictions of the rate at which that debris disappeared over time, Kaandorp and his collaborators concluded that about 500 million kilograms of initially buoyant plastic debris are entering the ocean each year. That’s less than a tenth of some of the most extreme previous estimates, the researchers noted. “We come up with quite different numbers,” Kaandorp said."

So let's be clear on this;  all that plastic of many different colors in the ocean is a major problem.