A Fin Whale can emit a low frequency sound that can be heard for over 10,000 miles.
At 20 hz the distance between peaks on that sound wave is 75 meters.
It is emitted at 190 decibels, louder than most gunshots.
Discussion
Wow! That’s an awesome.
I found it very interesting that sonar from a ship can basically scramble your insides for hundreds of miles if emitted actively
loudest animal on earth iirc