There's even more evidence to suggest that something is up right down there. One of the strangest things to confound modern science has been a mysterious hum, a sound that was first detected in 1991 and hasn't disappeared since. And where was this hum's source? At 54°S, 140°W - right in the middle of the South Pacific Ocean. Could this be a sign of some alien energy use?
While some have suggested whale song or tectonic activity, another strange factor makes a clear case for alien presence in our oceans. Apparently, the rhythm and frequency of the sound is almost identical to another unearthly noise - that of the "comet" 67P, which is also believed to be an alien craft. Could that just be a coincidence? We really doubt it.