u/Kind-Constant4005

Last year I went swimming with the watch all the time, even in salt water ocean, worked perfectly fine with the water mode. Now today, I went swimming the first time again this year, normally turned on the water mode like always. Shortly after going into the water, I got a brief message about watch cooling or something? The popup was gone as fast as it came, didn't think anything of it. All i could read was something along "Your watch is cooled, you can use it now". When I got out of the water, the watch wouldn't turn on anymore and the sensor on the back looks kinda borked, like you can see on the picture. Is my watch broken now? How could this have happened? Any tips would be greatly appreciated.