Quacker - The Conspiracy Wiki - Wikia
I am a paranormal skeptic but, I do love a good genuine mystery, and this one really intrests me.
Over a period of decades in the cold war, Soviet submarine detected strange "froglike" noises from some still unkown source that could avoid sonar and move at impossible speeds. Whatver it was occasionally attempted to comunicate by changing its pitch, but it was never determined what it was, and eventually, the phenpmenon faded away.
No explantion seems exactly right.
Some propose that it was simply American submarines, but they seeemd to move too fast to be manmade.
Another proporosal was that it was an extant or thought-to-be extinct whale, but the depths seem to be wrong.
Giant squids seemed a possible guess, as they are very fast, intelligent, and now confirmed to be real. But it is unknown by what mechanism they might have made the noises.
And of course there is the extraterrestrial/paranormal theory, for which there is no evidence.
Very interesting stuff. Anyone care to hazzard a guess?
Uh, never mind. Just found this:
http://www.sci-news.com/biology/scie...nds-01876.html