For years, UFO researchers have speculated that aliens could be living underwater, possibly even before humans arrived. Many reports have surfaced about strange flying objects that land in water, only to hide within the vastness of the oceans. These objects are also capable of flying directly from the water into the sky. As such, the topic of underwater unidentified flying objects (UFOs) is not new to the UFO community.
Alexei Koltsov’s Encounter
Alexei Koltsov, a Soviet submarine commander, claimed to have encountered mysterious underwater objects on several occasions. In 1984, he believed his submarine had encountered an unidentified flying object.
At the time, the submarine was on a military mission, so its route was highly specific. Despite the area being free of other submarines, radar displayed two unexplained objects in the region. These objects were moving at speeds far exceeding the submarine’s maximum allowable speed. 
According to the radar, the underwater UFOs were traveling at speeds of up to 300 kilometers per hour. Despite this, they could rapidly change direction without reducing speed. In one minute, they were at the surface of the water, and the next minute, they were in the deep-sea zone.
To get a better look, Alexei decided to surface. He and two officers exited the submarine and stood on the bridge. They attempted to determine what these objects were and what their intentions might be. Just as they were deciding on their next course of action, something shocking occurred: the mysterious object flew vertically out of the water.
The Mysterious Object
The object was large, but no more than 5 meters in size. The officers on the bridge couldn’t remember all the details, as it was flying at a very high speed right in front of them. Based on everything they saw, the commander concluded that the craft they had just encountered was extraterrestrial, not a spy vessel from any other country.
However, at that moment, the object began emitting green lights in all directions. The captain immediately ordered the crew to return to the submarine and dive as deep as possible. The UFO quickly plunged back into the water, shining a beam at the submarine as it pursued it.
Every crew member aboard the submarine then heard a sound resembling a blade cutting through metal. The crew members claimed that the UFO was attempting to destroy the submarine by sinking it. Throughout the entire ordeal, the crew was filled with fear. Alexei Koltsov admitted that, in that unique situation, he was uncertain of what to do.
He further explained that he was also frightened because all the submarine’s equipment stopped working at a terrifying depth of 160 meters. However, this seemed to be a warning, as the equipment resumed functioning just minutes later, while the unidentified object rapidly dived towards the ocean floor.
The Mystery of Underwater UFOs (USOs)
Encounters with underwater unidentified objects (USOs) have been reported for a long time, and their nature has been speculated to range from fictional and mechanical to government secrets or extraterrestrial origins. Of course, one possibility is that it was all just the imagination of a former submarine captain.
However, Koltsov’s story has been corroborated by his colleagues. Vladimir Azazov, a well-known figure in the UFO field from Russia, has also studied underwater UFO encounters. According to his findings, 50% of UFO encounters are related to the ocean, and over 15% are related to lakes. Therefore, it is highly likely that UFOs could be coming from underwater.
