A fisherman has filmed this strangely mesmerising footage of “UFO clouds” in the sky.
There is a wispy layer punctuated by a number of perfectly circular, denser ones.
They resemble flying saucers hovering above the sea.
It was spotted near Key West, Florida, US.
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The fisherman asked: “Has anyone seen clouds like these before?
“We were fishing off Key West.”
Local, Chris said: “I’ve seen enough alien invasion movies to know exactly what those are.”
Jesus wrote: “UFOs in stealth mode.”
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And Tobbe hit back against those suggesting they were just clouds.
He said: “The sheep, ‘That’s normal, baa.’”
But they are actually fallstreak holes, also known as hole-punch clouds.
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A fallstreak hole is a large gap, usually circular or elliptical, that can appear in cirrocumulus or altocumulus clouds.
Holepunch clouds are caused by supercooled water in the clouds suddenly evaporating or freezing.
They may be triggered by passing aircraft.
They occur at altitudes of 2,000 to 49,000ft.
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