Monster Fish

- Season 4

(2013)

The Pacific Northwest is known for things that are BIG ... giant redwoods, sweeping coastlines and massive runs of salmon. But Zeb Hogan is looking for a goliath that's so elusive, he'll scour every nook and cranny of the rivers here to find it. He's after the green sturgeon -- a monster fish that can grow up to 7 feet long, live up to 70 years, and has been on Earth since the days of the dinosaurs.

Are bull sharks stalking America's suburban waters? Nicknamed the linebackers of the sea" for their wide, stalky bodies, bull sharks are rumored to be moving inland, even surviving in freshwater 2,000 miles upriver. To separate fact from fiction, Zeb Hogan is teaming up with some of Florida's leading shark experts on a quest to catch a "river shark" and to determine the truth behind their deadly reputation.

Join Zeb Hogan as he heads to southern France to try to catch a mammoth-sized 650 lb. Wels catfish and witness one of the most bizarre feeding behaviors he's ever heard of.

Armies of salmon surge through Alaska's icy waters during mating season, but only one catches the eye of Zeb Hogan the elusive king salmon. Local legends tell stories of king salmon so wide you could walk across their backs. But to find out if stories like this one are true, and if a Salmonzilla is really out there, Zeb will have to brave rugged wilderness, hungry bears and a local watering hole where the signature cocktail is salmon-flavored vodka!

It's a voracious predatory catfish that prowls the rivers of Southeast Asia. Growing up to two meters long, the wallago is a predatory catfish rumored to swallow monkeys, porcupines and even monitor lizards. Zeb Hogan travels to the jungles of Malaysia and deep into the wilds of Indonesian Borneo in search of one of Asia's largest freshwater fish.

Zeb Hogan, National Geographic Explorer and aquatic biologist, travels across Thailand and Cambodia in search of a goldfish the size of a cow. It's rumored to grow up to 600 lbs and 10 feet long. It's so rare most people have never even heard of it, the giant carp.