Whale Codas Hint at Human-Like Language in Sperm Whales
UC Berkeley researchers studied 15 sperm whales over four years, attaching underwater microphones and analyzing codas; they found two frequency-based, vowel-like click types (a and i) that can form diphthongs, with different pods using distinct frequencies—suggesting regional accents and a highly complex system similar in pattern to human speech, published in Proceedings of the Royal Society B.
