Quote:
Originally Posted by nerdogray
If banging was heard, why can't they "answer back?" Surely they can generate a loud enough noise that will propagate all directions to hopefully trigger another round so they can zero in? It would also provide significant trauma relief to know someone is looking if it's heard.
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In air sound travels at about 340 m/sec underwater it travels at about 1500m/sec. That makes locating it more challenging based on direction.