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Upsweep is an unidentified sound detected on the American NOAA's equatorial autonomous hydrophone arrays. This sound was present when the Pacific Marine Environmental Laboratory began recording its sound surveillance system, SOSUS, in August 1991. It consists of a long train of narrow-band upsweeping sounds of several seconds in duration each.
The bursts of sound resemble quacks, earning the recording the nickname “Bio-Duck.” Speculation about their source was varied. It could be an underwater submarine, or a fish .
Bloop was an ultra-low-frequency, high amplitude underwater sound detected by the U.S. National Oceanic and Atmospheric Administration (NOAA) in 1997. [1]
Mermaids: The Body Found is a mockumentary television program [1] originally aired on American TV channels Animal Planet (May 27, 2012) and Discovery Channel (June 17, 2012). It tells a story of a scientific team's investigative efforts to uncover the source behind mysterious underwater recordings of an unidentified marine body.
A fearless BASE jumper decided to take on a massive underwater sinkhole in the Bahamas and created an incredible film that ... terrifying video. Torrey AndersonSchoepe. Updated July 14, 2016 ...
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A spectrogram of Upsweep. Upsweep is a sound detected by the U.S. National Oceanic and Atmospheric Administration's (NOAA) equatorial autonomous hydrophone arrays. The sound was recorded in August, 1991, using the Pacific Marine Environmental Laboratory's underwater sound surveillance system, SOSUS, and is loud enough to be detected throughout the entire Pacific Ocean.
The deep scattering layer, sometimes referred to as the sound scattering layer, is a layer in the ocean consisting of a variety of marine animals. It was discovered through the use of sonar , as ships found a layer that scattered the sound and was thus sometimes mistaken for the seabed .