The Blue Closet

  Our seas and oceans have been popular dumping grounds for many decades. People have dumped all manner of waste: raw sewage, household trash, medical waste, explosives, chemicals (including chemical weapons such as nerve agents) and varying levels of radioactive materials.
Household trash, and in particular plastic, is one of the more visible and widespread pollutants of the "blue closet".
  It is becoming apparent that efforts to reduce the scale of the problem have failed, and it continues to get worse. For example, "20,000 tons of waste finds its way into the North Sea alone, primarily from ships and the fishing industry". Of course, the problem is a global one, and I'm sure we've all heard about the giant floating garbage patches in our oceans. On average, there are "18,000 visible bits of plastic floating on every square kilometer of sea", according to one study. Like our disappearing icebergs, there is more below the surface. In fact, "up to 67 percent of the trash sinks to the sea floor".
  The volume of plastics and their ingestion by wildlife is not the only problem facing us. The plastics attract some of the many chemical pollutants in the water, concentrating them to levels up to "a million times higher than normal".
  As those toxins enter the food chain, the concentrations only increase in the creatures at the top. That would be you.

You can read the full article here or just view the accompanying photos here.
You can find shirts on this issue here and here.