Judging by its huge population, people love New York City. And it turns out that whales do, too.
Researchers placed a series of underwater sound recorders from Long Island to New York Harbor and found that a surprisingly diverse number of whales liked to spend time around NYC. Everything from endangered species like fin and humpback whales, all the way up to the massive blue whale. Because different species of whales have distinct "songs," the researchers were able to tell the species solely through sound. But from the surface the whales are undetectable.
"If you were standing at the top of the Statue of Liberty and looked south or southeast, if you [could see] under the water, there were whales singing under the surface," researcher Christopher Clark told National Geographic.
While the sound recorders allowed the researchers to determine the different types of whales swimming around New York, they don't make it possible to determine just how many of them there are, which is the team's next project.