Sperm whales are so loud that their clicks are capable of killing a human within their vicinity. These clicks are so powerful in the water that they can blow out your eardrums easily, and they can actually vibrate a human body to death.
Sperm whales are the loudest mammals on the planet, with vocalizations reaching an astonishing 230 decibels. Because water is denser than air, sound in water is measured on a different decibel scale. Despite their abilities, sperm whales are unlikely to use lethal force on us humans. They mainly use sound to communicate, investigate their surroundings, and navigate the big blue.
It is estimated that sperm whales can hear one another hundreds, perhaps even thousands of miles away using this technique.