how do well comunicate under water

BY THEIR SOUND

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AND ACTION

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Whales are very social creatures that travel in groups called “pods.” They use a variety of noises to communicate and socialize with each other. The three main types of sounds made by whales are clicks, whistles, and pulsed calls.
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They use variety of noises to communicate and socialize with each other. They make different types of sounds like- whistles, clicks, pulsed calls.
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by action
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THROUGH THE VIBRATIONS AND WAVES
 
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BY THEIR SOUND AND ACTION
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  • sound & action
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An underwater transmitter uses an acoustic speaker pointed upward to the surface. The transmitter sends sound signals, which travel as pressure waves. When these waves hit the surface, they cause tiny vibrations. Above the water, a radar continuously bounces a radio signal off the water surface.
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By sound and action we can communicate under water
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by using their sound and action.
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by using sound and action
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i think your question is wrong . 
please correct it if its wrong 
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They use variety of noises to communicate and socialize with each other. They make different types of sounds like- whistles, clicks, pulsed calls so the sound is below 20khz or above 20000khz.
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buy acoustic system
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buy acoustic system in the Navy
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Acoustic systems called underwater telephones have been developed for this purpose. U.S. Navy submarines use a specialized telephone system to communicate underwater. It works much like an AM radio, except that it transmits and receives sound waves instead of transmitting and receiving radio waves.
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Acoustic systems called underwater telephones have been developed for this purpose.
U.S. Navy submarines use a specialized telephone system to communicate underwater.
It works much like an AM radio, except that it transmits and receives sound waves instead of transmitting and receiving radio waves.
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sound also travels under water.
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They use variety of noises to communicate and socialize with each other. They make different types of sounds like- whistles, clicks, pulsed calls.
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