dr_rock
Yeah, I would hope they checked seismic data from the same time of the recording to rule that out. It would be pretty funny if no one did that, and it was caused by a minor earthquake.

Camonk
No, those NOAA guys are real idiots. Just fucking hacks, really. They never think of really simple stuff like this.

At least that's what I'm telling my soiled undergarments.

IrishWhiskey
I gotta assume ProfessorChaos is right. He is a Professor after all.

sakebito
Or whales humping. Anything but a submarine.

TeenerTot
Play it back at ten times speed. That's gotta be man-made.

dr_rock
According to the NOAA description, it "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." 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.

Cube
It sounds choppy, like it's been time-stretched and there are sound artifacts that sound like the sound's been downsampled a lot... It might be a drill, a buzz-saw or something.

StanleyPain
This isn't the real-time of the sound. The actual real time is roughly around 1 minute, not 2, which is why is sounds so distorted and choppy. When sped up greatly, the sound literally sounds like a "bloop" in the water. The actual waveform (which was heard several times in the space of something like a year) matches the profile of organic sound, as opposed to machinery or geological phenomena, but no serious researcher has ever said "Yeah, it's a living thing" for CERTAIN, just that the sound has all the earmarks of being made by a living thing. It is indeed one of those actual, legitimate unsolved mysteries because the fact it was heard across almost the entire array of sonar virtually rules out malfunctions or hearing some freak noise in one small place. The sound, as far as we know, really was THAT loud.

Another similar sound was detected by ocean sonar called the "slow down" which was another strange, long, whale-like sound coming from roughly the same area of the ocean and, again, impossibly loud.

Keefu
Whatever the fuck it is, making these sounds, I want it to stay the fuck in the ocean.

OxygenThief
And like every Lovecraft story, no one has actually seen it.

StanleyPain
What's extra great about the Cthulhu references is that the rough coordinates of where this sound originated are not far from the actual ocean location named by Lovecraft as where R'leyh was.

Goethe and ernie
Oh my God. A Shoggoth's voice is like a "musical piping". How could you get something so basic wrong?

HURF BLURF DUH
man i sure hope you're being ironic

freedoom
I thought that was because you were a witch and you would melt when the water touched you.

kiint
"the YOG_SOGGOTH is a marine based, amphibious creature with a very special talent. Unlike most of its aquatic brethren, it can destroy entire civilizations and wreak chaos throughout the known universe as the blink of an eye. It also can dig shellfish out of the ocean floor using its pointy snout, and has been know to enjoy the occasional kipper. Lets watch now, as it goes about getting its breakfast."