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Dolphins use echo location mainly to search for food. They will send out the sound and once it hits the fish, the sound waves bounce back to the dolphin forming a picture for them. As soon as they receive the click they send out another to measure the distance. With echo location a dolphin can determine size, shape, and distance of an object.

Improvement of the above answer by Sims3Legend:

Actually, dolphins use it, yes to search for food, but also to see objects from hundreds of yards away, so they can swim round them. They can determine the following of an object using echolocation:

Size, Shape, Distance, Speed, Direction and Internal Structure(depening on the object,)

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13y ago

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