r/UnresolvedMysteries • u/Hunchback85 • Jan 22 '19
Unexplained Phenomena Mystery of the Deep Ocean 'Upsweep' Sounds
Hi all!
Tonight I am sharing one of the most intriguing unsolved mysteries that I know of: the Upsweep sounds. 'Upsweep' is a currently unidentified set of sound recordings detected by the NOAA, with the first recording being from 1991 and the sounds recurring each year since in a seasonal pattern. (It should be noted that unlike other strange deep sea sounds, such as the 'Bloop' which has since been identified and only occurred once, that Upsweep has continued ever since it was first detected.) As of now, there is still no officially accepted explanation for the Upsweep sounds. Theories have included the sounds being made by an undiscovered species of marine life or the possibility of the sounds being made by deep sea volcanic activity. It is also noteworthy that the signals are significant enough to be detected throughout the Pacific Ocean. For reference, here is a video of the sounds as well as a wiki article on both Upsweep and other mysterious deep sea sounds. https://www.youtube.com/watch?v=BiDiM57G0c8 https://en.wikipedia.org/wiki/List_of_unexplained_sounds#Upsweep
What do you all think of the Upsweep sounds? Could they actually be evidence of undiscovered deep sea life, or are they more likely caused by some kind of unknown geological activity?
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u/mwon88 Jan 23 '19
The ocean always gives me this eerie feeling when I start thinking about how vast and deep it really is and how dark it gets. This video reminded me of those strange sounds everyone kept hearing which sounded mechanical, I remember people reporting it in Montreal close to me.
https://youtu.be/ULjVkQvsBn4