Rio 2016: Twitter worries itself green over Olympic pool as organisers fail to explain

As Britain's swimming stars Tonia Couch and Lois Toulson stood poised on their diving board for the synchronised diving 10m final, they noticed that something was different about the water.

The water at the Maria Lenk Aquatics Centre, was a deep green, a far cry from the azure blue that Olympic pools are known to be.

However, the two dove right in and bagged the fifth spot. Later, commenting on the green water, Couch told media persons: "I've never dived in anything like it but it didn't impact us. We noticed it in the warm-up and then by the competition it was even more green, but if anything it made it a bit easier to spot."

The water appeared blue when the Aquatics event took place on 8 August. But the players and spectators were amazed to see it turn green on 9 August. But it did not stop there. The water was turning greener by the minute.

Olympic organising committee spokesman Mario Andrada said, "We don't know exactly what happened. And we don't know yet why the pool changed colors." He further added that the water was tested on 9 August, and the investigation is on but "there were no risks for the athletes."

After the competition ended, the organisers released a statement which read: "It's very important to the Rio 2016 community to ensure a high quality of play. Tests were conducted and the water was found to be safe. We're investigating what the cause was."