The Nile River
The Nile River is full of all kinds of life forms, and not all of those life forms are friendly. The Nile River is home to Nile crocodiles which have been known to attack humans.
There are approximately 100 crocodile attacks per year in the north African Nile. That’s way more than the number of shark attacks that occur each year. Basically, don’t go for a swim in the Nile unless you’re okay with losing a limb or two.