Tuesday afternoon, Olympians set out to compete in the synchronized diving finals in Rio. But onlookers and competitors noticed that the water looked a bit different than it did on Monday. In fact, the water was a bright shade of green.
Lots of spectators, and even British diver Tom Daley, noted that though the water polo pool still looks blue, the diving pool is inexplicably green:
It’s unclear at this point what caused the pool to change color, but it hasn’t put a stop to the competition. A BBC commentator said on the air that he asked an organizer about the color change, and he said he didn’t know.