ShreyaMammatus Clouds
These strange looking clouds are mammatus clouds, which means mammary clouds. They are called so because of the udder like shape they have and they are quite a rare sight. These clouds are considered as preceding intense thunderstorms and tornados and so even the pilots avoid nearing these clouds for the fear of turbulence.
The first recorded description of these clouds dates back to 1894. If you are ever under these bubbly clouds then be assured you are to witness some nasty weather.
Next up is the only one of its kind creature in the world.