Scientists are spying on whales. They are doing this off the coast of New York City. A giant 500-pound floating object called a buoy is helping them. It's recording the moans and bellows that whales make when they talk to each other.
Scientists are trying to figure out what types of whales live near New York Harbor. The buoy shows them where the animals are located.
Mark Baumgartner works at the Woods Hole Oceanographic Institution in Massachusetts. He designed the buoy. It floats in the Atlantic Ocean, 22 miles off the coast of New York City.
Attached to the floating buoy is a football-sized listening device. It is anchored to the seafloor. The device listens for the whales' calls. It can hear them when they swim through the surrounding waters. Two other buoys are anchored off Massachusetts and Maine.
When one of these devices recognizes a whale call, it records the sound. Then it uses satellites to send information about the sound. It ends up in Baumgartner's lab.