Divers Remove a Fist-Sized Hook From a Shark's Mouth–By Hand loading...
Divers Remove a Fist-Sized Hook From a Shark's Mouth–By Hand
Dramatic photos show a diver gently pulling a large hook out of a shark's mouth, but scientists say the act may not have been necessary.
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.
Watch Shark Come Within Inches of Divers in 'Magical' Encounter loading...
Watch Shark Come Within Inches of Divers in 'Magical' Encounter
Conservation-focused shark divers get up close and personal with DJenny the tiger shark off the coast of Florida.
Deep-Sea Ghost Shark Filmed Alive In Ocean For First Time loading...
Deep-Sea Ghost Shark Filmed Alive In Ocean For First Time
The odd-looking fish, which sports a retractable sex organ on its head, was also spotted in the Northern Hemisphere for the first time.
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.
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.
Two-Headed Shark Is First of Its Kind loading...
Two-Headed Shark Is First of Its Kind
A rare find from the Mediterranean expands the number of animals that have been born with two heads.
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?
Great White Fight: Scientists Feud Over Shark Tagging loading...
Great White Fight: Scientists Feud Over Shark Tagging
A battle between state and nonprofit researchers is raging off Cape Cod, highlighting sensitivities in animal studies.
About the Show
In a remote corner of the South Pacific, National Geographic Explorer Enric Sala – one of the world’s leading marine ecologists – leads an elite team into an isolated underwater Eden. Sharks reign in the southern Line Islands, where humans rarely visit and survival is still of the fittest. Completing a daring survey of life on the reef from the micro to the mega, the research team uncovers secrets in what could be the last unspoiled archipelago on Earth. Covering nearly 3,300 kilometres on the 30-day expedition, the team faces a host of dangers – exposed to powerful currents and huge waves. What they find calls into question everything we know about a healthy reef ecosystem. Along the journey, they find over three times as much coral as any other reef in the Indo-Pacific on Flint Island. Surrounding Malden Island – the test site of three nuclear bombs in 1958 – the team finds a reef exploding with life and ten times more sharks than any other studied reef on the planet. Millennium Atoll offers a surprising refuge for blacktip reef sharks while Starbuck Island has the second largest biomass of any reef ever studied.

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