Season 5

1. World's Biggest Stingray

Thailand's giant stingrays and the whip rays of Australia can grow up to 16 feet and 1,300 lbs.

2014-07-07 • 44 min

2. River Wolf

Wolf fish, known locally as haimara, can reach a metre in length and is said to hunt humans.

2014-07-14 • 44 min

3. Amazon Shocker

There's a freshwater fish with a shock five times more powerful than a US wall socket.

2014-07-21 • 44 min

4. Frankenfish

The Thai snakehead is said to be able to move on land, and has apparently spread to US waters.

2014-07-28 • 44 min

5. Silver Devil

In Nicaragua, Zeb faces his most difficult battle hunting for one of the biggest monsters.

2014-08-04 • 44 min

6. River Jaws

Some shark species can survive in freshwater as well as salt.

2014-08-11 • 44 min