Sleeping Sperm Whales

Researchers studying the resting behavior of wild sperm whales have found evidence that whales literally ‘drift’ off to sleep. The┬áresearch demonstrates that sperm whales in the wild switch off completely for short periods of time, having ‘cat naps’ while performing slow rhythmic dives. The St Andrews team believe their study shows that sperm whales may sleep less than any other mammal in the wild.