11 Of The Dirtiest Beaches In The World

Guanabara Bay Beaches, Rio de Janeiro, Brazil The notoriously dirty Guanabara Bay in Rio got a lot of attention from the media before and during the 2016 Summer Olympics, when athletes in events like rowing and sailing had to swim in its filthy water. The Associated Press did an investigation and found that the water in the bay contained dangerously high levels of viruses and bacteria from human sewage. There was a 99% chance that athletes would get sick if they drank even three teaspoons of the dirty water.