How two photographers unknowingly shot the same millisecond in time

PetaPixel:

We had what looked like the exact same image, taken at the exact millisecond in time, from what looked like the same exact location and perspective.

It was astounding that we both captured the exact same image of water motion at the exact millisecond in time.

Even a more-than-cursory look at the two photos would lead you to believe they were identical. Great story.