Page 126 - The World of Animals
P. 126
sense of hearing. Dolphins can hear sounds from kilometres away. In
addition to that, by means of a system existing in their body that
resembles an apparatus used in submarines called "sonar", they can
easily find their way and determine their prey's location. This system
operates as follows: The sounds produced by the dolphin, which are
inaudible to the human ear, spread in the form of underwater sound
waves. When these sound waves meet a barrier, they hit it and bounce
back. The time taken for the sound to strike a fish or a rock and bounce
back shows the distance of
the prey or the barrier.
This system of dolphins
inspired scientists to
develop the sonar systems
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used in submarines.
The dolphin's strong sense
of hearing protects it from
falling prey to other fish in
the ocean.
