Whales, like many mammals, are social animals. Some travel in groups, called “pods,” while some travel alone. Some whale species, like the blue whale and the humpback, are also known to communicate with each other by making vocalizations, called “ whale songs .” Although researchers have yet to fully understand the hows and whys of whale songs, they do notice that whales’ karaoke night frequently happens during mating seasons, which suggests that whales use some sort of cetaceous pickup lines—or perhaps “love songs,” that invite the females to mate. Their songs are heard by other whales for thousands of kilometers. These whales either sing alone, or in a group. They may sing together, in tune with one another. (A choir made up of humpbacks is awesome. I am picturing them in my head right now—with their mouths open, of course.) Some researchers even suggest that whales recognize each other by the song they are singing, even those coming from a different pod. Of course, differen...