# Tell us an interesting random fact you stumbled across (Part 1)

**URL:** <https://boards.straightdope.com/t/tell-us-an-interesting-random-fact-you-stumbled-across-part-1/851674>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [April 13, 2020, 3:19am UTC](https://boards.straightdope.com/t/tell-us-an-interesting-random-fact-you-stumbled-across-part-1/851674 "2020-04-13T03:19:22Z")\
**Posts on this page:** 1\
**Showing post:** 7150

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**Author:** ![Crafter\_Man](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/crafter_man/32/458_2.png) [@Crafter\_Man](https://boards.straightdope.com/u/Crafter_Man)\
**Post date:** [August 8, 2023, 5:25pm UTC](https://boards.straightdope.com/t/tell-us-an-interesting-random-fact-you-stumbled-across-part-1/851674/7150 "2023-08-08T17:25:05Z")

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Thanks to @Francis_Vaughan , [today](https://boards.straightdope.com/t/using-a-radio-receiver-to-find-a-lost-key/988221/5) I learned dolphins can hear audio frequencies that are above 100 kHz. (For reference, most humans can’t hear frequencies much above 20 kHz.)

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