Read More: Meet the Doomsday Fish that Strikes Fear in the Hearts of Sailors Antarctica's Role in the Bloop One wonderful ...

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.

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.

Sound recording of the bloop from NOAA. The Bloop: A Mysterious Sound from the Deep Ocean | NOAA SOSUS. NOAA. Most of our ocean is unexplored. NOAA and Climate.gov. Antarctica is colder than the ...