
- 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.
- 2
River Wolf
Wolf fish, known locally as haimara, can reach a metre in length and is said to hunt humans.
- 3
Amazon Shocker
There's a freshwater fish with a shock five times more powerful than a US wall socket.
- 4
Frankenfish
The Thai snakehead is said to be able to move on land, and has apparently spread to US waters.
- 5
Silver Devil
In Nicaragua, Zeb faces his most difficult battle hunting for one of the biggest monsters.
- 6
River Jaws
Some shark species can survive in freshwater as well as salt.