We've seen the wicked, the weird, and the wonderful at the Rio Olympics so far.
The good news is, the Games are only five days old so we can expect plenty more to come, however, officials will be hoping that they won't stumble upon many tough nuts to crack like this one.
When the official diving pool bizarrely turned green during the women's synchronised 10m platform final, everybody was baffled as to what had caused the water to turn such a colour.
SUBMIT AN ARTICLE
Apply to become a GMS writer by signing up and submitting a 250-word test article: http://gms.to/haveyoursay5
It looks like the kind of water you would find in the Philippines, so you can see why there was so much confusion when the water turned this colour in Brazil.
After evaluation and exploring possible causes for the incident, it was understood by Rio official Mario Andrada that the greenness was caused by a proliferation of algae. This was because of heat and a lack of wind.
The International Swimming Federation (FINA) stated on Wednesday that the change in colour was not due to heat and a lack of wind, but instead caused by water tanks running out of certain chemicals.
They followed up their statement by announcing that the water posed "no threat" to athletes' safety.
Rio organisers are now saying that the colour of the water should be rectified soon, whilst admitting that more could have been done to prevent the problem arising in the first place.
Andrada said: "We did have test events with the same number of divers but we are using the pool for a longer period now.
"The people in charge could and should have done more extensive tests during the day - we probably failed to notice what would happen over time.
"There is no risk to the athletes - an independent group has confirmed that - and the pool should go back to the classic blue colour soon."
Rio organisers say that once the pool has returned to its former colours, the problem should not occur again.
Why do YOU think the pool really turned green? Let us know what YOU think in the comments section down below!