Thanks to Winnie Lee and Atlas Obscura:

Photographing the New York City Subway Cars That Retired as Artificial Reefs

How Stephen Mallon captured this unusual voyage to the bottom of the ocean.

The rooftops of subway cars. “Abbey Road, 2008.” STEPHEN MALLON

The photographer Stephen Mallon specializes in documenting man’s industrial-scale creations. During his career, he’s focused his lens on the recycling industry, the largest floating structure ever built, and the transportation and installation of a new bridge in New York City. So it wasn’t surprising when, in 2008, he was drawn to an unusual program spearheaded by the MTA New York City Transit system: a multi-phased artificial reefing project that saw the shells of 2,580 decommissioned subway train cars repurposed and dropped into coastal waters off New Jersey, Delaware, Maryland, Virginia, South Carolina, and Georgia, between 2001 and 2010.

The abstract beauty of stripped-down vehicles in “Transfer, 2009.” STEPHEN MALLON

Mallon arranged to follow the outdated subway cars as they were prepared and cleaned, loaded onto barges, and finally plopped into the sea. As he traveled with a crew in a tugboat to get his shots, the photographer developed his sea legs.

Subway cars hoisted in the air in “Mind The Gap, 2008.” STEPHEN MALLON

“I was never underwater, so just needed to keep myself steady on the back of the boat. It’s kind of like surfing or skiing—just keep your balance, keep the horizon line straight, bend your knees, and don’t fall overboard,” Mallon says.

With his Canon camera, Mallon shot more than 6,000 frames (only a tiny fraction of which are shown in a new exhibit, Sea Train: Subway Reef Photos by Stephen Mallon, currently on display at the New York Transit Museum) over the course of three years…

Read the whole story here.