originally uploaded by ‘da Wills

Over 650 retired New York City subway cars have so far found a second home – 80 feet underwater and 16 nautical miles off the coast of Delaware – where they’re helping to transform “a barren stretch of ocean floor into a bountiful oasis, carpeted in sea grasses, walled thick with blue mussels and sponges, and teeming with black sea bass and tautog.” The result: “a 400-fold increase in the amount of marine food per square foot in the last seven years.” You can read more of the story at treehugger.com.