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How far does sound travel underwater?

  1. Mar 3, 2010 #1
    Hi,
    How far does sound travel underwater, and more importantly does it travel further in water than in air? If so why? I know that sound travels faster through water than air for obvious reasons (density), and I intuitively assume further, but I cannot explain why. Any help is appreciated.
    Thanks
     
  2. jcsd
  3. Mar 3, 2010 #2
  4. Mar 6, 2010 #3
    This is not explanatory, but whales, using very low frequency sound, can communicate across oceans.

    KM
     
  5. Mar 6, 2010 #4
    To expand a little on what Kenneth Mann said, whales can emit sounds so loud they cavitate water. I have heard it suggested that before the days of motorized ships it would have been possible for a whale at the north pole to have been heard by one at the sourth pole.
     
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