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Bloop
Bloop
The seismograph depicting the frequency of the Bloop signal over time
Background
Type Phenomena
Continent None
Country None
One-Time? No
Theories  · Giant sea monster
 · Extraterrestrial activity
 · Icebergs
 · Earthquakes

The Bloop is the name given to a very loud, ultra-low frequency sound that was recorded by the U.S. National Oceanic and Atmospheric Administration in 1997. It was detected using the Equatorial Pacific Ocean autonomous hydrophone array, which is normally used to detect seismic activity.

DescriptionEdit

The sound's source was roughly triangulated to 50°S 100°WCoordinates: 50°S 100°W (a remote point in the south Pacific Ocean west of the southern tip of South America), and the sound was detected several times by the Equatorial Pacific Ocean autonomous hydrophone array. This system was developed as an autonomous array of hydrophones that could be deployed in any oceanographic region to monitor specific phenomena. It is primarily used to monitor undersea seismicity, ice noise, and marine mammal population and migration. This is a stand-alone system designed and built by NOAA's Pacific Marine Environmental Laboratory (PMEL) to augment NOAA's use of the U.S. Navy Sound Surveillance System (SOSUS), which was equipment originally designed to detect Soviet submarines.

According to the NOAA description, it "r[ose] rapidly in frequency over about one minute and was of sufficient amplitude to be heard on multiple sensors, at a range of over 5,000 km (3106.86 miles)." The NOAA's Dr. Christopher Fox did not believe its origin was man-made, such as a submarine or bomb, nor familiar geological events such as volcanoes or earthquakes. While the audio profile of Bloop does resemble that of a living creature, the source was a mystery both because it was different from known sounds and because it was several times louder than the loudest recorded animal, the blue whale. A number of other significant sounds have been named by NOAA: Julia, Train, Slow Down, Whistle and Upsweep.

Possible ExplanationsEdit

There are several explanations as to what the phenomenon could be. Theories include:

  • Giant sea creatures
  • Extraterrestrial activity
  • Icebergs colliding
  • Underwater earthquakes

TriviaEdit

  • If the "bloop" were an undiscovered creature, it would have to be larger than any known whale.
  • According to the NOAA description, it "rises rapidly in frequency over about one minute and was of sufficient amplitude to be heard on multiple sensors, at a range of over 5,000 km."
  • Mer-People are now suspected by some theorists to be the cause of the Bloop. The HP Lovecraft creature Cthulhu has jokingly suspected to be the cause as well, even if Cthulhu cults take it seriously.
  • On a meta level, this page is the only page so far to possess an "Audio Gallery" section.
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Miscellaneous Phenomena
Aging Doll · Angel Hair · Bloop · Bottomless Pits · Eerie Silence Phenomenon · Glitches in Reality · Ringing Stones · Skyquakes · Smoke Ring · Star Jelly
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GalleryEdit

Photo GalleryEdit

Video GalleryEdit

"The Bloop" mysterious ocean sound louder than any creature00:52

"The Bloop" mysterious ocean sound louder than any creature

The original recording













Audio GalleryEdit

Bloop real

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