Giant Stingray

E1

Researcher Zeb Hogan travels to Cambodia to find and study the little-known giant stingray.

Sawfish

E2

Follow Dr. Zeb Hogan on his journey to find the largest freshwater fish in Australia: the freshwater sawfish.

Great White Sturgeon

E3

Follow Zeb Hogan as he goes in search of the biggest and oldest of North America's river monsters: the White Sturgeon.

Giant Stingray

E4

Follow Dr Zeb Hogan on his quest to find what could be the world's largest and most deadly freshwater fish: the giant freshwater stingray.

Raging Amazon

E5

Aquatic ecologist Dr. Zeb Hogan teams up with kayaking experts to discover what monster fish are lurking beneath the surface in Rio Roosevelt.

River Invasion

E6

They are carp from Asia which can jump 10 feet in the air at the sound of a boat motor, turning a day on the water into a boxing match.

Alien Catfish

E7

Alligator Gar

E8

Thai Eden

E9

Nile Giant

E10

Ancient Beast

E11

Dr Zeb Hogan travels to the American Midwest in search of the paddlefish, one of the largest, oldest and most bizarre -looking freshwater fish on the planet.

Himalayan Terror

E12

Mekong Mystery

E13

Giant freshwater fish are studied at Khone Falls on the Mekong River in Laos.

Kamchatka Salmon

E14

Catfish King

E15

Zeb Hogan travels to Spain in search of the invasive Wels catfish -- a monster fish capable of growing more than 8 feet long, eating birds, cats, and, as some legends claim -- even humans! The voracious predator is not native to the region, and biologists fear it could be destroying the local ecosystem.