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is there anything else in the ocean that would make that sound? people have speculated it could have been harmonic from shipping or a pump motor or something where you have the primary frequency and shadow frequencies. i don t think that s the case, though. i think the other day when they got two hours and 20 minutes of good, solid pinger data, and i believe that s what it was, because they re not just listening at 37.5 but they also have spectrum analyzers that look at the wave form and look and they know exactly the frequency exactly what it is. they would not be talking about that as strongly as they are if they thought that it was a whale or some other natural not for two hours and 20 minutes. jon: but here is one of the things that bothers me, and maybe we can put up the map that shows essentially where a couple of different ships have been