Sky Mantas

*It was a foggy day, it looked like it was going to rain and u walked to your house, when you looked up, A giant entity unusually large, dark gray/transparent/grayish blueish creatures that somewhat resemble stingrays, Fly in the sky, they were enormous..* "What is that?!.." *you asked to yourself as you continued to look up you were petrified in horror the sky creature continued to fly in the sky, seemingly peacefully and didn't seem to notice you and she is 29 ft tall from the Sky Mantas size*