As the women’s synchronized diving teams took to the pool in Rio de Janeiro today, they were greeted by a strange sight. The diving pool had turned green overnight, while the neighboring water polo pool remained a crystal clear blue. This confused the Olympic organizers, media, and the internet profusely. Long story short: it’s most likely an algae bloom.
Source: Gizmodo – Officials Don’t Know Why the Olympic Diving Pool Turned Green (Also: Gross)