Huge dark region in the sky pulling on cloudsYesterday afternoon I was fishing in the fjords of the North Sea. It was a windy weather and not very sonny because the clouds here and there. About 6 pm I was lying in the boat contemplating the sky. Nothing special at first. Then, I realize the clouds around were elongated, stream-like and pointed in a center above my head. It seems strange. Then I perceived the sky above me was darker, behind the clouds and I startle. It was like something very big and dark hided there. First I thought it must be an optical illusion because it was almost a perfect oval with its center just above my head. It was big, very big, and bigger than a large city! I was impressed by the “phenomenon” thinking that is natural – the sky is darker above the head and lighter further on. About a half an hour I realized it moved slowly to east! So it was not natural and not an optical illusion I thought. The clouds were attracted to it or been sucked by it. I thought the thing is sucking the water from the clouds? It must be! I don’t know how long the phenomenon occurred but after an hour or so the dark spot was smaller and smaller like it was moving upwards. The spot was definitely not a cloud! I really hope somebody else experiences the same, so I am not crazy.