Mysterious Ocean Noises Baffles Scientists
For the last 25 years scientists have been left baffled as to the cause of mysterious ocean noises that originate from the depths of the Pacific Ocean. The strange sounds, known as the ‘Upsweep’, were first discovered in 1991. Scientists initially believed the sounds to be whale songs or ship vibrations, but these theories were quickly ruled out after further investigation. Express.co.uk reports: The National Oceanic and Atmospheric Administration (NOAA) has described Upsweep as “a long train of narrow-band upsweeping sounds of several seconds duration each”.