Plastics in marine ecosystem

I could see a lot of plastic materials and poly-ethene papers being carried into the sea by rivers during the recent flooding.These plastic papers detoriate agricultural productivity and have several other adverse effects on land ecosystem.Until recently I have never imagined what effect it would have on marine ecosystem.It dont think much research work had been carried out in this area.Any such a research work would be too expensive for any government or NGO.One simple thing we can do is reduce the usage of plastic.