Seven miles down into the Mariana Trench, you'd think it would be quiet as a deep sea graveyard, but it isn't.
Scientists dropped a hydrophone into the abyss to record sounds and what they heard surprised them. They are now working on a hydrophone that will record both sounds and images in the lowest point on Planet Earth, the Challenger Deep.
Deep-Sea Audio Recordings Reveal A Noisy Mariana Trench, Surprising Scientists
4 comments:
That's fascinating. One would assume that it would be as silent as it is dark and cold. Could the noises be techtonic grumblings or are they from creatures from that far down the trench? It will be amazing to find out, finally.
Cave dwellers
According to the article it's a mix of tectonic events, whale noises (whale sounds evolved to carry for great distances so they can communicate with each other when far apart), and human-technology noises.
There is actually life even at such extreme depths, mostly things like giant tube worms that live around volcanic vents where the heat provides enough energy to power a local ecosystem. But worms, whatever else they may be, are at least quiet.
We hear similar sounds every night the bedroom window is up.
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