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Theories about the sound's origins included an undiscovered sea creature. By 2011, NOAA scientists concluded the sound was the cracking of an ice shelf during an icequake. In the summer of 1997, ...

Back in the late 1990s, NOAA’s Acoustic Monitoring Project recorded a series of haunting, creepy noises from deep beneath the ocean’s surface (you can hear it in the audio above). When this recording ...

It was the loudest sound ever recorded underwater, and its audio profile seemed to match an animal call. What as the Bloop and could an unidentified creature have made it? The ocean, so dark and ...

The loudest underwater sound ever recorded has been a mystery for 20 years and it still hasn't got a confirmed explanation. In 1997, the United States' National Oceanic and Atmospheric Administration ...

When the Bloop was first reported by the National Oceanic and Atmospheric Administration, the media began to speculate that it was caused by a giant undersea creature. In 1997, the Bloop was picked up ...

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