Have you ever wondered what happens to old subway cars? Just like buses, cars and old tennis shoes, they regularly get replaced. So, what becomes of them?

As it turns out, our government has been dumping them in the ocean. Specifically, the Atlantic Ocean. But wait a minute before you whip out your email client and start hammering out a nasty letter to your senator. As it turns out, this is actually a good thing for the environment.

"They’re basically luxury condominiums for fish," said Jeff Tinsman, the Delaware Department of Natural Resources and Environmental Control’s artificial reef program manager.

Instead of scaring the fish away, the fish have been flocking to the old subway cars. So much so, in fact, that the program is trying to find even more subway cars for the fish to congregate in. Currently, there are around 700 of them already on the ocean floor.

Via New York Times