E1 - Giant Stingray

Aired: July 13, 2009

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

E2 - Sawfish

Aired: September 19, 2009

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

E3 - Great White Sturgeon

Aired: September 21, 2009

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

E4 - Giant Stingray

Aired: September 26, 2009

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.

E5 - Raging Amazon

Aired: September 28, 2009

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

E6 - River Invasion

Aired: October 03, 2009

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.

E7 - Alien Catfish

Aired: October 05, 2009

E8 - Alligator Gar

Aired: October 10, 2009

E9 - Thai Eden

Aired: October 12, 2009

E10 - Nile Giant

Aired: October 17, 2009

E11 - Ancient Beast

Aired: October 19, 2009

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.

E12 - Himalayan Terror

Aired: October 24, 2009

E13 - Mekong Mystery

Aired: October 26, 2009

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

E14 - Kamchatka Salmon

Aired: October 31, 2009

E15 - Catfish King

Aired: November 02, 2009

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.