00:00Mariana Trench? Metallic sounds detected? School taught us silent deep. Deep water pressure
00:07crushes steel, yet these pings, acoustic signals, defy the crushing depths. These metallic signals
00:15aren't random noise. They follow strange patterns. Are these unknown geological formations or an
00:23undiscovered natural phenomenon? Want to know more about this baffling mystery? Check the link in
00:29bio.
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