Hmmm. Underwater UFOs? Could be.
From an article at www.ufoevidence.org/documents/doc1147.htm writtened by Bill Hamilton:
"What secrets lurk in ocean depths? Are there alien forms of intelligent life that occupy the vast volumes of water that constitute our oceans, seas, and lakes?..."
So what's next? Squishsquatch sightings?
(Try saying that fast three times with a snorkel tube in your mouth.)