3. Amazon Basin, South America
The Amazon Basin is located in South America. Swimmers know how dangerous this area is. It is not because of weather conditions, radiation or pollution. On the contrary, the waters there are clean and the number of living creatures inhibiting the basin is huge. The worst part is that some of those animals are extremely dangerous. We are now talking about the electric eel and the red-bellied piranha. Also, there is the famous anaconda and, which is even more horrible, it’s home to the Candiru. This fish is small and belongs to the catfish species. It is sometimes called the vampire fish. The fish is capable of invading the human body through openings, including the urinal tube!