MysteriesBloop and NOAA's unexplained ocean soundsArtifactsThe Upsweep recordingThe Upsweep recording: audio
0:00 / 0:29
0:00Spectrogram, 0 to 1.3 kHz0:29
Sped up 20 times.
NOAA Pacific Marine Environmental Laboratory, 1991. Public domain
Copies 1
AudioNOAA Pacific Marine Environmental Laboratory · pmel.noaa.gov · Public domain (US government work)Primary source: Acoustics Monitoring Program: Upsweep2 steps from the original
Where it was recorded
Upsweep source region, about 54°S 140°W · Open ocean (approximate location)
Sources 1
Cite it
Mysteries Department. (2026). The Upsweep recording: audio [Copy CPY0D9C7TQ22VKB]. https://mysteriesdept.com/r/CPY0D9C7TQ22VKB
@misc{mysteriesdept_art0d9c7tf8459e,
title = {The Upsweep recording: audio},
author = {{Mysteries Department}},
year = {2026},
note = {Artifact, catalog key CPY0D9C7TQ22VKB},
url = {https://mysteriesdept.com/r/CPY0D9C7TQ22VKB}
}