Sperm whales may make their own vowel sounds, similar to human language

A recent study reveals that sperm whales communicate using click patterns similar to human language vowels. These whales produce clicks by flapping “phonic lips” in their noses, forming rhythmic series called codas. Previously, scientists focused on the rhythm of these clicks, but new research from Project CETI shows that the clicks have two distinct types based on frequency relationships, akin to human vowels. These differences, called formants, are visible on spectrograms and suggest that whales might change the shape of a structure in their nose to produce different sounds. The study found that these “vowel” types, named “a-coda” and “i-coda,” are used in specific patterns, indicating intentional communication. This discovery highlights the complexity of whale communication and its similarities to human language. QUESTION: How might understanding sperm whale communication change our perspective on animal intelligence and conservation efforts?