what is the bloop sound
Bloop was an ultra-low-frequency and extremely powerful underwater sound detected by the U.S. National Oceanic and Atmospheric Administration (NOAA) in 1997. A fiction TV show in the form of a documentary titled Mermaids: The Body Found used the bloop sound as evidence for the existence of mermaids or an unknown species in the oceans. 2  NOAA posted a refutation on their web site.