Scientists have cracked the code behind a mysterious language discovered among a non-human species living in Earth's oceans that mirrors human speech. Using AI to study whale communication, Project CETI researchers discovered that sperm whales 'talk' to each other with strange, Morse code-like clicking patterns. The mammals used patterned click sequences known as codas, which include two distinct vowel-like sounds — an 'ah'-like a-coda and an 'ee'-like i-coda. The vowel-like noises were not random, as whales were seen actively controlling the pitch, length, and type of sounds they were making as they 'pronounced' different words.