Analysis shows whales’ coda vocalizations are ‘highly complex’ and remarkably similar to our own We may appear to have little in common with sperm whales – enormous, ocean-dwelling animals that last shared a common ancestor with humans more than 90 million years ago. But the whales’ vocalized communications are remarkably similar to our own, researchers have discovered. Not only do sperm whale have a form of “ alphabet ” and form vowels within their vocalizations but the structure of these vowel