# The Whistle recording

> An undulating single tone heard on only one hydrophone, so it cannot be located; PMEL likens it to an erupting arc volcano.

Source: https://mysteriesdept.com/mysteries/noaa-ocean-sounds/artifacts/ART0D9C7WNJ4DNE/the-whistle-recording  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

---

[Mysteries](https://mysteriesdept.com/mysteries)[Bloop and NOAA's unexplained ocean sounds](https://mysteriesdept.com/mysteries/noaa-ocean-sounds)[Artifacts](https://mysteriesdept.com/mysteries/noaa-ocean-sounds#artifacts)The Whistle recording

**ART** 0D9C7WNJ4DNE·Artifact · recording

# The Whistle recording

Recording0:52Public domainRecorded 7 July 1997, 07:30 GMT

[Cite][Download](https://mysteriesdept.com/files/d/b9a5b171c58385125b71f476761bd73d05d75bf0e5b200a7d1e3b590c0068845)

0:00 / 0:52

 ![Spectrogram of The Whistle recording](https://mysteriesdept.com/files/v/b9a5b171c58385125b71f476761bd73d05d75bf0e5b200a7d1e3b590c0068845/spec)

0:00Spectrogram, 0 to 1 kHz0:52

An undulating single tone heard on only one hydrophone, so it cannot be located; PMEL likens it to an erupting arc volcano.

NOAA Pacific Marine Environmental Laboratory, 1997. Public domain

## Copies 2

**Audio** NOAA Pacific Marine Environmental Laboratory · pmel.noaa.gov · Public domain (US government work)Primary source: [Acoustics Monitoring Program: Submarine Volcanic Eruption (Whistle)](https://mysteriesdept.com/sources/SRC0D9C71T62YG9/acoustics-monitoring-program-submarine-volcanic-eruption)2 steps from the original

[Where it's published](https://www.pmel.noaa.gov/acoustics/sounds/whistle.html)[Download](https://mysteriesdept.com/files/d/b9a5b171c58385125b71f476761bd73d05d75bf0e5b200a7d1e3b590c0068845)

**Document** NOAA Pacific Marine Environmental Laboratory · pmel.noaa.gov · Public domain (US government work)Primary source: [Acoustics Monitoring Program: Submarine Volcanic Eruption (Whistle)](https://mysteriesdept.com/sources/SRC0D9C71T62YG9/acoustics-monitoring-program-submarine-volcanic-eruption)2 steps from the original

[Where it's published](https://www.pmel.noaa.gov/acoustics/sounds/whistle.html)[Download](https://mysteriesdept.com/files/d/9eef8d07c9486883bfe6682691c3d3b793b2903f662ede0d24ceb93b0969eb4f)

## Where it was recorded

[NOAA autonomous hydrophone at 8°N 110°W](https://mysteriesdept.com/records/PLC0D9C76PE3W7S/noaa-autonomous-hydrophone-at-8n-110w) · Hydrophone mooring

## Sources 1

- [Acoustics Monitoring Program: Submarine Volcanic Eruption (Whistle)](https://mysteriesdept.com/sources/SRC0D9C71T62YG9/acoustics-monitoring-program-submarine-volcanic-eruption)_SRC_

## Cite it

```
Mysteries Department. (2026). The Whistle recording [Artifact ART0D9C7WNJ4DNE]. https://mysteriesdept.com/r/ART0D9C7WNJ4DNE
```

Key

**ART** 0D9C7WNJ4DNE

Kind

Recording

Held by

NOAA Pacific Marine Environmental Laboratory

Dated

recorded 7 July 1997, 07:30 GMT

Licence

Public domain (US government work)

Place

[NOAA autonomous hydrophone at 8°N 110°W](https://mysteriesdept.com/records/PLC0D9C76PE3W7S/noaa-autonomous-hydrophone-at-8n-110w)

Part of

[Bloop and NOAA's unexplained ocean sounds](https://mysteriesdept.com/mysteries/noaa-ocean-sounds)

The record

Every record is open data. Take this one as JSON, with its links and its history.

[JSON](https://mysteriesdept.com/api/v1/records/ART0D9C7WNJ4DNE)