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All Seasons

Season 1

  • S01E01 Monster Fish of the Amazon

    • April 5, 2008
    • National Geographic Wild

    Traveling to South America, biologist Zeb Hogan goes in search of piraba and pirarucu, two of the largest freshwater fish in the Amazon

  • S01E02 Monster Fish of the Mekong

    • October 21, 2008
    • National Geographic Wild

    Virtually unknown to science, Zeb focuses on finding two specific species: the Mekong giant catfish and the deadly freshwater stingray.

  • S01E03 Monster Fish of Thailand

    • May 6, 2009
    • National Geographic Wild

    Join Dr. Zeb Hogan, National Geographic Explorer, as he finds a world record breaker: one of the largest and deadliest freshwater fish, the giant freshwater stingray.

  • S01E04 Monster Fish of Mongolia

    • December 31, 2010
    • National Geographic Wild

    Aquatic ecologist Zeb Hogan continues his quest to find and protect the world's largest freshwater fish in the frigid rivers of Mongolia. He will travel by plane, truck, and horseback to find the largest trout known as the Hucho taimen.

  • S01E05 Hunt for the Monster Fish

    • July 27, 2009
    • National Geographic Wild

    Join fish biologist, conservationist and National Geographic Explorer Zeb Hogan to see the most extreme encounters in mega-fishing and the groundbreaking research being done to protect these fish.

  • S01E06 Monster Fish of Australia

    • December 31, 2010
    • National Geographic Wild

    As part of his Megafishes Project, Zeb Hogan heads to the Australian outback on an expedition to find the elusive sawfish, which looks like a cross between a shark, a stingray and a chainsaw and can grow to 22 feet long.

  • S01E07 Monster Fish of America

    • November 2, 2009
    • National Geographic Wild

    Dr. Zeb Hogan goes in search of North America's prehistoric river monsters: the white sturgeon.

Season 2

  • S02E01 Flying Carp

    • July 18, 2010
    • National Geographic Wild

    Flying fish from Asia are invading America's waterways and turning innocent boating trips into boxing matches as fish "knock out" anglers. National Geographic Explorer Zeb Hogan heads to the Illinois River, one of the areas where their population is thickest, to see what can be done to stop them ... and the answer could be as simple as your dinner plate.

  • S02E02 Alligator Gar

    • July 19, 2010
    • National Geographic Wild

    Dr. Zeb Hogan searches the swamps and bayous of the southern United States in search of the rapidly disappearing alligator gar - a monster fish that's known for its armored scales and a mouthful of razor-sharp teeth.

  • S02E03 Giants of Thailand

    • July 26, 2010
    • National Geographic Wild

    Dr. Zeb Hogan tours the rivers of Thailand looking for 600-lb Siamese carp, giant Mekong catfish and the freshwater stingray.

  • S02E04 Jungle Catfish

    • August 2, 2010
    • National Geographic Wild

    Dr. Zeb Hogan explores the remote Rio Roosevelt in Brazil's Amazon basin in search of monster catfish and new aquatic species in the adventure of a lifetime.

  • S02E05 Catfish King

    • August 9, 2010
    • National Geographic Wild

    Dr. Zeb Hogan travels to Spain in search of the invasive wels catfish - a monster fish with a voracious appetite capable of destroying the local ecosystem.

  • S02E06 Monsters of the Nile

    • August 30, 2010
    • National Geographic Wild

    Dr. Zeb Hogan travels to Lake Victoria and the Nile River in Uganda and comes face to face with one of the continent's largest species of freshwater fish, the Nile Perch.

Season 3

  • S03E01 Predators of the Outback

    • July 8, 2011
    • National Geographic Wild

    Each year in the Australian outback, the dry season leaves five top predators- giant stingrays, sawfish, bull sharks, and freshwater and saltwater crocodiles- stranded in waterholes with limited food supplies. Zeb sets out to find out how each of the giants has adapted to the environment and which one is the ultimate king of the pool. With the help of local experts, Zeb gets up close with a bull shark’s sharp teeth, wades through knee-deep water in the dark of night searching for a stingray.

  • S03E02 Giant Eels

    • July 15, 2011
    • National Geographic Wild

    The giant eel is a massive, flesh-eating, wall-climbing, air-absorbing, snakelike fish that can attack like a crocodile and live upwards of 100 years. So, of course, Zeb goes in search of two of the largest species. First, in New Zealand, Zeb hunts for the New Zealand longfin eel and goes fishing with the locals, who use a traditional technique to lure the legendary monster. Then, in the Solomon Islands, he'll look for the elusive giant mottled eel.

  • S03E03 Australian River King

    • July 22, 2011
    • National Geographic Wild

    The Murray cod can grow up to 6 feet long and weigh more than 250 pounds, and is rumored to eat everything from birds to snakes to possums even its own kind. But humans have been encroaching on the cod's river system, and now these enormous fish are rarely seen in the wild. Zeb travels to Australia in the hopes of experiencing this behemoth's size and power for himself.

  • S03E04 Russian Giants

    • July 29, 2011
    • National Geographic Wild

    Kamchatka, Russia, is one of the wildest and most remote locations on earth and is home to the largest salmon population on the planet but why? Zeb travels to the Far East to explore this salmon paradise. Determined to catch as many salmon species as he can, Zeb joins a team of kayakers and locals to explore some of the area's more than 14,000 rivers.

  • S03E05 India's River Devil

    • August 5, 2011
    • National Geographic Wild

    A mammoth catfish that has allegedly stalked, attacked and killed people can be found in the Indian Himalayas. Dr. Zeb Hogan investigates reports of the goonch. With the help of a local guide, Zeb sets out to examine the scenes and speak with eyewitnesses who recount the attacks: One recalls a young man who was fatally pulled under water while bathing; another describes a goonch dragging a 1,000-pound buffalo into the river.

  • S03E06 American Behemoth

    • August 12, 2011
    • National Geographic Wild

    One of the oldest and most bizarre-looking freshwater fish on the planet can be found in the American Midwest. That's where Dr. Zeb Hogan travels to find the paddlefish. It once teemed throughout the Mississippi and Missouri River systems, but its population has plummeted disappearing from four states and rapidly decreasing in others. Zeb teams up with biologists and conservation officers to better understand what's causing the decline of this American behemoth.

  • S03E07 Jumping Giants of Laos

    • August 19, 2011
    • National Geographic Wild

    Dr. Zeb Hogan travels to one of the world's largest waterfalls in Laos, where each year millions of fish climb the falls to spawn. But little is known about their exact migratory route, and plans to dam the channel could place the lives of the fish, and the millions of people who depend on them for their livelihoods, at risk. Zeb and a team of world-class kayakers navigate the waterways with specially equipped kayaks, designed to take measurements of the rivers below them.

Season 4

  • S04E01 Giant Catfish

    • May 7, 2013
    • National Geographic Wild

    Lured by stories of catfish the size of Volkswagens, Zeb Hogan is on a mission to find out if the legendary giant catfish of the South really exist. Finding huge fish is all about taking advantage of local knowledge, so he teams up with Rusty, a lifelong catfisherman with a thick Mississippi drawl and unique southern charm. Using a massive 7-foot-tall, 40-foot-long net, they'll troll the waters for a record-breaking fish.

  • S04E02 Slamonzilla

    • August 2, 2013
    • National Geographic Wild

    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!

  • S04E03 Green Goliath

    • July 19, 2013
    • National Geographic Wild

    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.

  • S04E04 600lb Goldfish

    • July 26, 2013
    • National Geographic Wild

    Zeb Hogan is on the hunt for a goldfish the size of a cow! Giant carp can grow up to weigh 600 pounds and measure 10 feet long, but the trouble with finding these monster fish is … they only live in three of Southeast Asia's rivers. To find out more about this elusive fish, Zeb heads to Thailand, where he helps the Thai Department of Fisheries' transport 30 giant carp into a new breeding pond on the Chao Phraya River.

  • S04E05 Jungle Jaws

    • August 2, 2013
    • National Geographic Wild

    It's a voracious predatory catfish that prowls the rivers of Southeast Asia. Growing up to 6 feet long and weighing more than 175 pounds, the wallago catfish is a pure carnivore, equipped with formidable jaws and a double band of saw-like teeth that are designed to attack. Seeking help from local fishermen, Zeb Hogan travels to the jungles of Malaysia, where wallago are rumored to swallow monkeys, porcupines and even monitor lizards.

  • S04E06 River Shark!

    • August 9, 2013
    • National Geographic Wild

    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

Season 5

  • S05E01 World's Biggest Stingray

    • July 7, 2014
    • National Geographic Wild

    There are reports of river rays in Thailand and Australia growing up to 16 ft. and 1,300 lbs., prompting fish biologist Zeb Hogan to brave their 15-inch poisonous barbs and sharks.

  • S05E02 River Wolf

    • July 14, 2014
    • National Geographic Wild

    Zeb is heading into the heart of Guyana in search of fish with a terrifying reputation,he wolf fish, a species said to be a brutal hunter of animals and reportedly even humans.

  • S05E03 Amazon Shocker

    • July 21, 2014
    • National Geographic Wild

    Dr. Zeb Hogan travels to the Brazilian Amazon to determine whether the shock of an electric eel is proportionate to the fish's size.

  • S05E04 Frankenfish

    • July 28, 2014
    • National Geographic Wild

    Zeb Hogan, a National Geographic explorer and aquatic biologist, goes in search of monster snakehead in Thailand, their natural habitat, and Florida, where they have become aggressive invaders.

  • S05E05 Silver Devil

    • August 4, 2014
    • National Geographic Wild

    Deep in the rainforest of Nicaragua, Zeb Hogan is on a mission to track down a powerful predator that can grow up to eight feet long and nearly 300 pounds.

  • S05E06 River Jaws

    • August 11, 2014
    • National Geographic Wild

    Fish biologist Zeb Hogan travels to Australia to try and track down two of the country's river shark species - one the biggest and one the rarest.

  • S05E07 Furry Trout

    • National Geographic Wild

    Zeb heads to the waters of Canada in search of a legendary fish covered in white fur.

  • S05E08 Texas Hogfish

    • National Geographic Wild

    Zeb scours the creeks of Texas in pursuit of the elusive Wild Hogfish.

Season 6

Season 7

  • S07E01 Giant Goonch

    • June 1, 2018
    • National Geographic Wild

    The Salween River Basin has an extreme diversity of animals, and is home to some 50 fish species found nowhere else on Earth. Hogan found more than five species of fish that grow more than 100 pounds, like this catfish, while filming for his Nat Geo WILD Monster Fish show.

  • S07E02 Hammerhead Invasion

    • June 8, 2018
    • National Geographic Wild

    Zeb teams up with renowned shark scientist, Dr. Tristan Guttridge, who has been conducting research on the annual migration of Great Hammerheads for years.

  • S07E03 40,000 lb. Shark

    • October 26, 2018
    • National Geographic Wild

    Zeb Hogan is in Mexico to witness a mysterious migration of the world’s biggest fish. But can he uncover why Whale sharks swarm here each year?