7 Amazing Animal Organs People Don't Have loading...
7 Amazing Animal Organs People Don't Have
Under-eye "flashlights," venom glands, claspers. Nature abounds with body parts that aren't found in humans.
Ruby Seadragon Caught on Video for First Time in Western Australia loading...
Ruby Seadragon Caught on Video for First Time in Western Australia
The scarlet fish was declared a new species in 2015—but before this footage, it had never been seen alive.
14 Not-Fake Shark Pictures From a Real Nat Geo Photographer loading...
14 Not-Fake Shark Pictures From a Real Nat Geo Photographer
A phony photograph of a shark is the latest in a year of fake news. But these images are all real.
New Giant, Air-Breathing Fish Discovered loading...
New Giant, Air-Breathing Fish Discovered
Several other species of arapaimas are likely lurking in the Amazon, waiting to be identified.
800-Pound Groupers Making a Comeback—But Not Everyone's Happy loading...
800-Pound Groupers Making a Comeback—But Not Everyone's Happy
Some Florida fishermen say Atlantic goliath groupers are eating too many fish, but scientists argue the behemoths still need our protection.
Tracking the Secret Lives of Ocean Predators loading...
Tracking the Secret Lives of Ocean Predators
Cutting-edge technology used by marine biologist Barbara Block is leading to more knowledge about sharks and bluefin tuna.
Watch Sharks and Whales Swarm a Massive Fish Run loading...
Watch Sharks and Whales Swarm a Massive Fish Run
South Africa’s epic KwaZulu-Natal sardine run brings millions of fish near the coast, which in turn attract scores of hungry animals.
Baiting, Behavior, and Big Sharks loading...
Baiting, Behavior, and Big Sharks
Baiting sharks allows divers to see them in the wild, but does the practice have a long-term impact on shark behavior?
This Popular Aquarium Fish Might Vanish From the Wild loading...
This Popular Aquarium Fish Might Vanish From the Wild
Banggai cardinalfish are taken from the wild in large quantities to supply the aquarium trade, which has conservationists worried.
Flounders’ Eyes Face Skyward. How Do They See the Ocean Floor? loading...
Flounders’ Eyes Face Skyward. How Do They See the Ocean Floor?
Flatfish have a clever way of blending into their surroundings.
About the Show
Dr Zeb Hogan, National Geographic Explorer and an aquatic ecologist goes on his journey to find the largest freshwater fish in Australia – the freshwater sawfish, a cross between a shark and a chainsaw. These amazing monsters are nearing extinction but our continent is a stronghold for this elusive fish. Zeb gets in the water to learn about the sawfish's amazing hunting technique, stunning prey with its saw-like rostrum and then eating it whole. Zeb teams up with a local scientist, David Morgan and the indigenous Jarlmadangah Rangers, to catch and study the monstrous sawfish in the Fitzroy River in the country’s northwest. Zeb travels deep upstream into the desert where freshwater pools hide huge predators like the saltwater crocodile and bull sharks. Zeb and the team follow the sawfish migration from the estuary upstream and back again until they return to the sea. He tags and releases many sawfish, from a month old baby to a 2.2-metre megafish on its way to the ocean where it could someday grow to be a monster 7-metre fish.

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