Freshwater Shark

"No fish inspires the same terror as the shark, a creature with an insatiable hunger for brutal violence. But at least these killers are confined to the oceans. Or are they? Jeremy investigates whether it is possible for sharks to live in freshwater, and if so just how far inland these vicious predators will bring their reign of terror."

Synopsis
Sharks are perhaps the most dangerous and feared of all fish, but these predators are confined to the oceans. Or maybe not... The bull shark, the most dangerous and aggressive shark, has been known to swim miles up rivers.

Jeremy follows reports of attacks in rivers near the most populated shores of Australia to find out why and how far these fish swim upstream. He traces the trail of blood left by these monsters from bays and lagoons to rivers, until he finally zeros in on the lair of these sea monsters.

After seeing the evidence that these predators can even attack race horses and drag people underwater in completely fresh water, he realizes that he faces a creature even deadlier than a great white shark.

While fishing for one, Jeremy finds something even more shocking and terrifying than a fully grown shark.