Learn how dolphins use sound pulses to sense their surroundings in this video from NOVA: Inside Animal Minds: Dogs & Super Senses. To demonstrate this ability, researchers blindfold Tanner, a trained dolphin, and ask him to mimic a swimmer’s actions. Robbed of his vision, Tanner uses echolocation to copy the swimmer’s movements in the water. A special organ behind the dolphin’s forehead emits focused pulses of sound, or clicks. The sound waves from the clicks bounce off objects in the water, echoing back to the dolphin for interpretation. Similar to sonar used by submarines, echolocation helps dolphins locate food and navigate at night or in murky water.
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