Debunking the Wilder Theories Though some speculated that the Bloop might be evidence of an undiscovered sea monster or ...

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.

And one monster with a great big mouth ... And when you move your puppet, the shadows move too. "Bloop, bloop, bloop." It also works to use your hands. "Snap snap, snap snap, snap snap!" ...