What's in the water? Rio diving pool turns green

Brazilian Olympic organizers have done their best to ensure green is the dominant color at Rio 2016, but it's doubtful they were behind the water change at the diving venue.

Just one day after diving events were conducted in pristine blue water, the venue's water is now a green shade, while the water polo pool at the same site remains blue.

Another look at the pool shows just how green it actually looks:

No explanation was given for the color change before diving events continued later in the day.