Scientists unravel the mystery behind whale song. A new study published on February 21 in the journal Nature reveals the mystery of the song mechanism of humpback whales and blue whales.

Researchers from Denmark, the United States and Austria have identified, deep in the larynx, what allows these mammals to produce these unique sounds. All you have to do is observe the bottom of the whale's larynX, which is lined with membranes. They vibrate when the whale is underwater in apnea, and expels air from its lungs. The membranes begin to resonate like vocal cords in humans.