https://www.neatorama.com/2008/08/23/the-bloop-and-other-mysterious-sounds-of-the-earth/
The "Bloop" and Other Mysterious Sounds of the Earth - Neatorama
Noise Addict blog has a neat post about some of the strangest and most mysterious sounds from the Earth (some with audio clips). Like this one, nicknamed "The...
sounds of earththe bloopmysteriousneatorama