The strange UFO was captured by a Ryanair passenger on a flight from Dublin to Paris.
The very dark object reminded him of a highly elongated "tadpole" or "snake".
The man noticed the "tadpole" in the window when he was flying over the English Channel. The object did not look like a natural phenomenon.
It is difficult to tell from the posted recording (see the video below) whether this object is moving or is in one place, since the camera in the man's hands twitches, and the plane is flying.
However, the 29-year-old author of the video assures that the subject was making rapid movements, but that was before he took out his phone and started filming it.
In front of the object you can see a thickening - "head", and its "tail" stretched across the sky for probably a kilometer.
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According to the author of the video, the object was in the sky for some time after he finished filming. He does not know the exact place where it happened, but approximately somewhere over the English Channel.