Sperm whales may make their own vowel sounds, similar to human language– www.scientificamerican.com

“On the surface, [these vocalizations] sound like this alien, ocean intelligence that has nothing to do with us,” says lead author Gašper Beguš, a linguist at the University of California, Berkeley, who works with Project CETI, a nonprofit that is dedicated to studying sperm whale communication. “But when you actually look at it closely, you realize, ‘Oh, we’re way more similar.’”

Sperm whales flap “phonic lips” (a structure akin to human vocal cords) in their nose to create clicking sounds. They combine these clicks into rhythmic series called codas, which can vary from whale clan to whale clan. In the past, scientists trying to make sense of their communication have tended to focus on the rhythm of these patterns, almost as if deciphering morse code.