If we knew the exact location of the microphones, and the date they recorded the sound, we could then look and see where the different tempurature ocean currents where on that day. I believe there are satellites that record it, and we can publicly look at it.
If there was a stream of warmer water directed at the microphones, we could see it. This stream might be able to carry sound in it, because it is surround be cooler water, which is more dense, and acts like a duct that carries the sound.
(that sound is so wierd, it sounds like aliens)
*edit*
Sofar is the water equivelent of the tropical ducting I mentioned.
It may happen vertially as well as horizontally.
Do whales actually take advantage of this channel to communicate with each other across the ocean?
This message has been edited by riVeRraT, 03-29-2006 01:59 PM