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, ...

In 1997, ocean researchers recorded a massive underwater sound so loud it was picked up by sensors over 3,200 km apart. They named it the Bloop — and nobody could explain it. It was louder than whales ...

Was the infamous “bloop” a sea monster? Learn why this noise was a good reminder that we should keep an eye on the South Pole. In 1997, while using underwater microphones to monitor volcanic activity ...

In 1997, Bloop was detected by U.S. Navy "spy" sensors 3,000 miles apart that had been put there to detect the movement of Soviet submarines, the magazine reports. The frequency of the sound meant it ...

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 ...

A mysterious underwater noise recorded in 1997, the “Bloop,” fuelled years of speculation about megalodon and other undiscovered giants. But NOAA’s long-running investigation eventually traced the ...