Echolocation is the ability to see through sound.
Scientists believe that most or all toothed whales have echolocation abilities.
When the sound hits something it bounces or echoes back to the whale. The sounds are picked up by the lower jaw. The lower jawbones are hollow and filled with fat. This helps the sound travel through the jawbone up to the middle ear, inner ear, and auditory nerve. These echoes are interpreted by the brain.