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are you kidding me?
the anti sub stuff they have on the seafloor can prolly hear a duck fart after it ate a french frie
You are thinking of our SOSUS network which is microphones, this is referring to a seismic event.
Though, it brings up a valid question, why haven't we heard anything from SOSUS?
edit on 16-3-2014 by greencmp because: (no reason given)
Marine geologist Dave Long from the British Geological Survey told the BBC that the energy released by a plane hitting the ocean would be rapidly dissipated in the water.
He said any device picking up such small movements would have to be very sensitive and incredibly close to the impact, meaning that search teams would now know exactly where to look for the debris.