Recent reports about the "Tic Tac" UFO from 2004 indicate that it's possible the flying object may have been trying to interact with a giant undersea object.
The Huffington Post obtained one pilot's detailed synopsis of an aquatic disturbance connected to the original sighting, writing, "The disturbance appeared to be 50 to 100 meters in diameter and close to round. It was the only area and type of whitewater activity that could be seen and reminded him of images of something rapidly submerging from the surface like a submarine or a ship sinking.”
Another pilot described the disturbance under the water as something that "looked like frothy waves and foam almost as if the water was boiling." A submarine close by, however, did not detect any strange objects sin the water.