Baffled scientists have discovered a mysterious noise that is emanating from the Caribbean Sea. This low pitched sound cannot be heard by humans but can be detected from space. Scientists have never heard anything like it. Beneath the hum of giant waves and other unexplained noise from the deep ocean, another baffling sound is emitted by the Caribbean Sea.

Scientists at the University of London have found that due to the size of the sea, it’s producing a sound from its seafloor which plays a note of A-flat. This new underwater noise, far too low pitched for humans to hear can be detected from space. Scientists have never seen—or heard—anything like it. READ MORE