Art by John Blackford and James Fisher, photo courtesy John Barnes. The decision to create artificial reefs off Delaware's coast using discarded “Redbird” subway cars from New York City has proven so successful that marine officials are struggling to cope with overcrowding. Since the state first began dropping the cars to the ocean floor, the formerly barren area has become an underwater metropolis for countless tuna, mackerel, flounder and bass. And with that comes......