Weird 'UFO mirage' hovering over water in a national park in AlaskaAugust 03, 2021
The footage was captured at the Glacier Bay National Park and Reserve. The park posted the video to its Facebook page and explained that the mirage is called a "Fata Morgana".
The strange dome-shaped object in the video is actually your brain being tricked into seeing a distorted version of an island.
A Fata Morgana is a mirage that appears just above the horizon and can significantly distort an object that's already there. Glacier Bay National Park and Reserve explained on Facebook: "Fata Morgana is a mirage seen within a narrow band on Earth’s horizon.
Islands in glacier bay turn to UFOs or the flying Dutchman with a little imagination and a pinch of cool science! When air of different densities meet, the air in Earth’s atmosphere acts as a refracting lens, creating the mirage effect we see.
Thanks to: http://ufosightingshotspot.blogspot.com