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Sound detected by NOAA since they started recording audio in the Pacific. Most active in Spring and Fall. It originates from 54°S 140°W.

Unidentified_Deep_Sea_Sounds_-_UpSweep_(1X)

Unidentified Deep Sea Sounds - UpSweep (1X)

Possible Explanation[]

Upsweep could be the sound of ice breaking or maybe the infamous monster known as The Bloop.

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