Once a year, during the mating season, the male Moor frog changes from a brown color into a blue one.
I was lucky to witness this natural phenomenon, which only lasts for a few days.
I took this picture in the afternoon with the latest warm sunlight.
I kept my camera and telelens just a few millimeters above the water surface.
Since my photo equipment doesn't like water and the frog could dissapear every moment underneath the water this was a highly exciting moment!