NEW YORK HARBOR—It’s an odd scene in New York Harbor. On the banks of tree-lined Governors Island, a small group has gathered to watch a tiny gray boat anchor itself in the water.
Two figures lean over the side of the vessel, their red life vests standing out against the slate waves. Each clutches several rust-colored mesh sacks, dangling just above the surface of the water.
“One … two … three!”
With that, they drop the bags and watch them sink into the murky depths.
Each sack is filled with dozens of live oysters. Ten feet below the little boat, they settle into their home at the bottom of the harbor: an artificial reef, made of steel and wire structures resting on mounds of rock and shell.
A few moments later, a pair…