Scientists have revealed a mysterious recording that they say could be the sound of a giant beast lurking in the depths of the ocean.
While it bears the varying frequency hallmark of marine animals, it is far more powerful than the calls made by any creature known on Earth, Britain’s New Scientist reported on Thursday. (…)
It is too big for a whale and one theory is that it is a deep sea monster, possibly a many-tentacled giant squid.
– source: CNN.com archives
Now, this is creepy. For real.
This sound was repeatedly recorded during summer, 1997 on the Equatorial Pacific Ocean autonomous hydrophone array. The sound rises rapidly in frequency over about one minute and was of sufficient amplitude to be heard on multiple sensors, at a range of over 5,000 km. It yields a general location near 50oS; 100oW. The origin of the sound is unknown.
– source: the official NOAA site (I guess)
Though it matches the audio profile of a living creature, there is no known animal that could have produced the sound. If it is an animal, it would have to be, reportedly, much larger than even a Blue Whale, according to scientists who have studied the phenomenon.
– source: Wikipedia
Further reading: BloopWatch.