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When New York retires its subway trains, they end up sleeping with the fishes. But that’s okay. It turns out that train cars are pretty good for the fishes, and sea life in general. Stripped down to their metal frames, the cars become a hot bed for coral, further bolstering the ocean food chain. What seems like garbage instead becomes a human-made habitat for undersea creatures.
Photographer Stephen Mallon captured this process, capturing what happens to old G trains flung into the ocean. This so-crazy-it-actually-works idea is helping to repopulate vital barrier reefs by providing coral the flat surface they need to grow and prosper into large colonies.