Echolocation is used by many marine mammals, bats and humans. They use this technique to see throughout their ears.
How do they use echolocation?
Non-human animals emit sound waves to navigate their way and to locate prey. After they emit sound waves, The sound waves ricochet against objects and animals. Humans use echolocation quite differently from animals. Humans use sticks to click on the ground. Some people use their mouth to make clicking noises
Ben Underwood is known for “the boy who can see without eyes” He uses echolocation with his mouth so he can navigate throughout the world. In his past he was Diagnosed with retinal cancer at the age of two, his mum had to make a hard choice to Let the cancer spread or to remove his eyes. At the age of 3 his eyes were removed.