This is exactly what occurred when a peculiar "bloop" sound was detected in the Pacific Ocean in 1997. After years of ...

Below, you can listen to the bloop sped up 16 times: Paola Alexandra Rosa · Bloop, a mysterious sound from the deep ocean. Over the years, theories about the mysterious ocean sound's origin abounded.

Almost a decade of research after the Bloop was heard, the NOAA declared in 2005 that the sound appeared to have been an icequake. Specifically, the creation of an iceberg.