In 1997, the Bloop was heard on hydrophones across the Pacific. It was a loud, ultra-low frequency sound that was heard at listening stations underwater over 5,000km apart, and one of many mysterious ...

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 ...

Deep within the Southern Pacific waters, the eerie silence is interrupted by some strange, elusive sounds that travel through the body of the ocean. In 2002, oceanographer Christopher Fox was staring ...

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 ...

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 ...

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 ...

In a startling revelation that left scientists astounded, an unusual noise, now referred to as the "bloop", was detected off the coast of Florida. Initially, speculation ran wild with theories ...

In 1997, NOAA scientists recorded a haunting, strange sound in the southern Pacific Ocean's depths. Theories about the sound's origins included an undiscovered sea creature. By 2011, NOAA scientists ...