E1 - World's Biggest Stingray

Aired: July 07, 2014

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

E2 - River Wolf

Aired: July 14, 2014

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

E3 - Amazon Shocker

Aired: July 21, 2014

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

E4 - Frankenfish

Aired: July 28, 2014

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

E5 - Silver Devil

Aired: August 04, 2014

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

E6 - River Jaws

Aired: August 11, 2014

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