Bull sharks are known to be able to swim between saltwater and freshwater, but they're showing up in rivers and lakes in ...

The biggest source of salty freshwater in D.C. and other major northern inland cities is an overapplication of road salt to thaw winter ice, which runs off into rivers or the ground.

A Tik Tok video shows a man catching a bull shark in a river and experts say it's not uncommon for members of the species to venture into freshwater. ... or 2,485 miles, inland from the Atlantic ...

Salinization of freshwater and soils adversely affects 500 million people around the world, especially in low-lying river deltas. A new study led by researchers at the University of Portsmouth, in ...

A Tik Tok video shows a man catching a bull shark in a river and experts say it's not uncommon for members of the species to venture into freshwater. ... it was only about 1 1/2 miles inland, ...

Credit: Reddit. Few freshwater fish can match the size of the Mekong giant catfish, which can exceed 10 feet and weigh over 660 pounds. Native to the Mekong River, this gentle giant feeds on ...