# NOAA National Ocean Service n.d.: What is the bloop?

> NOAA National Ocean Service, n.d.. 5 records on Mysteries Department cite it. NOAA's institutional summary, including the 2005 date it gives for the…

Source: https://mysteriesdept.com/sources/SRC0D9C72SE163B/what-is-the-bloop  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Sources](https://mysteriesdept.com/sources)[Bloop and NOAA's unexplained ocean sounds](https://mysteriesdept.com/mysteries/noaa-ocean-sounds)NOAA National Ocean Service n.d.

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# What is the bloop?

NOAA National Ocean Service, n.d.. _NOAA Ocean Facts (oceanservice.noaa.gov)_.

NOAA's public explainer. Says the 1997 sound was recorded on hydrophones more than 3,219 km apart across the Pacific, lists the theories that circulated (military exercises, ship engines, winches, giant squid, whales, unknown animals), and states that PMEL researchers deploying hydrophones closer to Antarctica found in 2005 that it was an icequake.

**Bloop and NOAA's unexplained ocean sounds** Web pageChecked against the original0

## What it's used for here

NOAA's institutional summary, including the 2005 date it gives for the attribution.

## Cited by on this site 5 records

[At least one of the sounds came from human activity (military exercises, ships, winches or other machinery).](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/answers/ANS0D9C7FZA5QEB/at-least-one-of-the-sounds-came-from-human-activity-military)

Answer

ANS

[NOAA's Ocean Service describes it as an iceberg breaking away from an Antarctic glacier.](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/evidence/EVD0D9C7JDE0412/noaas-ocean-service-describes-it-as-an-iceberg-breaking-away)

Evidence

EVD

[PMEL identifies the Bloop as an icequake, as dated by NOAA's Ocean Service](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/events/EVT0D9C7BJP5JTD/pmel-identifies-the-bloop-as-an-icequake-as-dated-by-noaas)

EVT

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

The mystery article

MYS

[Was the Bloop an icequake, and from which iceberg?](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/questions/QST0D9C7CHY4R4M/was-the-bloop-an-icequake-and-from-which-iceberg)

Question

QST

## Cite it

```
NOAA National Ocean Service (n.d.). What is the bloop?. NOAA Ocean Facts (oceanservice.noaa.gov). https://oceanservice.noaa.gov/facts/bloop.html
```

[Read it free at oceanservice.noaa.gov](https://oceanservice.noaa.gov/facts/bloop.html)

Key

**SRC** 0D9C72SE163B

Kind

Web page

Rights

public-domain

Kept

28 Oct 2026

Checked

Against the published original

Added by

[apollo](https://mysteriesdept.com/u/apollo)

The record

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