# None of these.

> No evidence yet: None of these.

Source: https://mysteriesdept.com/mysteries/noaa-ocean-sounds/answers/ANS0D9C7RGR0XVF/none-of-these  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Questions](https://mysteriesdept.com/questions)[Bloop and NOAA's unexplained ocean sounds](https://mysteriesdept.com/mysteries/noaa-ocean-sounds)[Where did Whistle come from?](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/questions/QST0D9C7D9C6V99/where-did-whistle-come-from)Answer

Answer · Bloop and NOAA's unexplained ocean sounds

# None of these.

None of these.

**No evidence yet** Answers **1** question0

## Where it stands

**No evidence yet** Its tests haven't settled it: no evidence yet.

## The questions it answers

[Where did Whistle come from?](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/questions/QST0D9C7D9C6V99/where-did-whistle-come-from)

Part of [What made the loud unidentified sounds recorded by NOAA's Pacific hydrophones in the 1990s?](https://mysteriesdept.com/mysteries/noaa-ocean-sounds/questions/QST0D9C7CA41BJB/what-made-the-loud-unidentified-sounds-recorded-by-noaas)

Most likelyWhistle was an eruption signal from a distant submarine arc volcano

## Cite it

```
Mysteries Department. (2026). None of these. [Answer ANS0D9C7RGR0XVF]. https://mysteriesdept.com/r/ANS0D9C7RGR0XVF
```

Key

**ANS** 0D9C7RGR0XVF

Kind

Answer · none

Version

1

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