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 ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. In 1997, NOAA scientists recorded a haunting, strange sound in the southern Pacific Ocean's depths. Theories about the sound's ...

In the summer of 1997, NOAA's underwater microphone network - a Cold War-era array of hydrophones originally built to track Soviet submarines and later repurposed to monitor earthquakes and whale ...

In the summer of 1997, the US National Oceanic and Atmospheric Administration picked up a sound from deep beneath the Pacific. The sound seemed to come from an animal far larger than any we’ve ever ...

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 ...

With Halloween approaching, it's natural to wonder just a little bit more than usual about things that go "bump" in the night. But what about things that go "bloop" in the deep sea? Poltergeists, ...