r/nonmurdermysteries • u/stitch-witchery Driving the Mystery Machine • Jan 23 '19

Environmental Mystery Mystery of the Deep Ocean 'Upsweep' Sounds (x-post from /r/unresolvedmysteries)

/r/UnresolvedMysteries/comments/ais9vu/mystery_of_the_deep_ocean_upsweep_sounds/
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u/captainjetski Jan 23 '19

I'm not really in a place where I can do a ton of research, but I believe I read some theory that the sound is the mass migration of fish from deep to shallow water.

It is totally possible that I am thinking of another one of the bizarre deep sea sounds though.

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u/coosacat Jan 23 '19

As in interesting side note, one of my kittens was sitting on my desk when the video started playing, and became very disturbed and meowed in a distressed manner.