kkleiner writes "Right now, as you read this, there are five or six million shipping containers on enormous cargo ships sailing across the world's oceans. And about every hour, on average, one is falling overboard never to be seen again. It's estimated that 10,000 of these large containers are lost at sea each year. This month the Monterey Bay Aquarium Research Institute (MBARI) sent a robotic sub to investigate a shipping container that was lost in the Monterrey Bay National Marine Sanctuary in 2004. What's happened to the sunken shipment in the past seven years? It's become a warren for a variety of aquatic life on the ocean floor, providing a new habitat for species that might otherwise not be attracted to the area."