Is it a sea monster? Is it Cthulhu ... The sound came to be called "the bloop" and remained a mystery for more than a decade.

Scientists said they have seen the first signs of life returning to deep sea mining tracks carved into the abyssal seabed ...

In 2011, a group of divers looking for treasure and salvage in the Baltic Sea took a sonar image of a ... It sounds like a horror movie monster, but ‘The Bloop’ was actually an ultra-low ...