The Nile also supports several large animal species, such as hippopotamuses, which were once common along much of the river, but now mostly inhabit the Sudd and other swampy areas in South Sudan.

This river is vital to the ecosystem and protection of wildlife in Zambia. It was also the perfect spot to stalk a mature croc. Along the way, I learned a lot about the Nile Crocodile’s ...

RIO DE JANEIRO — Guinness World Records, Britannica and the U.S. government agree: The longest river in the world is the mighty Nile — the “father of African rivers,” Britannica says. But ...