# The Bloop recording

> A broadband sound heard on hydrophones more than 5,000 km apart. NOAA matches its spectrogram to icequakes recorded in the Scotia Sea and places the…

Source: https://mysteriesdept.com/mysteries/noaa-ocean-sounds/artifacts/ART0D9C7SQT2DSN/the-bloop-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 Bloop recording

**ART** 0D9C7SQT2DSN·Artifact · recording

# The Bloop recording

Recording0:10Public domainRecorded summer 1997

[Cite][Download](https://mysteriesdept.com/files/d/ecc057a98dfcb0e2a35affc54e906d9a0ee8870bc9592c8fffce873bad5b374f)

0:00 / 0:10

 ![Spectrogram of The Bloop recording](https://mysteriesdept.com/files/v/ecc057a98dfcb0e2a35affc54e906d9a0ee8870bc9592c8fffce873bad5b374f/spec)

0:00Spectrogram, 0 to 1 kHz0:10

A broadband sound heard on hydrophones more than 5,000 km apart. NOAA matches its spectrogram to icequakes recorded in the Scotia Sea and places the source, by its arrival direction, between Bransfield Strait and the Ross Sea, possibly at Cape Adare.

NOAA Pacific Marine Environmental Laboratory, 1997. Public domain

## Copies 3

**Audio** NOAA Pacific Marine Environmental Laboratory · pmel.noaa.gov · Public domain (US government work)Primary source: [Acoustics Monitoring Program: Icequakes (Bloop)](https://mysteriesdept.com/sources/SRC0D9C70TY0F01/acoustics-monitoring-program-icequakes-bloop)2 steps from the original

[Where it's published](https://www.pmel.noaa.gov/acoustics/sounds/bloop.html)[Download](https://mysteriesdept.com/files/d/ecc057a98dfcb0e2a35affc54e906d9a0ee8870bc9592c8fffce873bad5b374f)

**Document** NOAA Pacific Marine Environmental Laboratory · pmel.noaa.gov · Public domain (US government work)Primary source: [Acoustics Monitoring Program: Icequakes (Bloop)](https://mysteriesdept.com/sources/SRC0D9C70TY0F01/acoustics-monitoring-program-icequakes-bloop)2 steps from the original

[Where it's published](https://www.pmel.noaa.gov/acoustics/sounds/bloop.html)[Download](https://mysteriesdept.com/files/d/ab64a080aa4efbb73364b7c5eee3660d13dbd1efce84e9d2f915727b347c81ed)

**Photograph** Nojhan · commons.wikimedia.org · CC BY-SA 3.01 step from the original

[Where it's published](https://commons.wikimedia.org/wiki/File:Bloop_locations.png)

## Where it was recorded

[Bloop source region, between Bransfield Strait and the Ross Sea](https://mysteriesdept.com/records/PLC0D9C77620JP5/bloop-source-region-between-bransfield-strait-and-the-ross) · Antarctic coast (approximate location)

## Sources 1

- [Acoustics Monitoring Program: Icequakes (Bloop)](https://mysteriesdept.com/sources/SRC0D9C70TY0F01/acoustics-monitoring-program-icequakes-bloop)_SRC_

## Cite it

```
Mysteries Department. (2026). The Bloop recording [Artifact ART0D9C7SQT2DSN]. https://mysteriesdept.com/r/ART0D9C7SQT2DSN
```

Key

**ART** 0D9C7SQT2DSN

Kind

Recording

Held by

NOAA Pacific Marine Environmental Laboratory, Seattle and Newport

Dated

recorded summer 1997

Licence

Public domain (US government work)

Place

[Bloop source region, between Bransfield Strait and the Ross Sea](https://mysteriesdept.com/records/PLC0D9C77620JP5/bloop-source-region-between-bransfield-strait-and-the-ross)

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/ART0D9C7SQT2DSN)