How do Animals Have Sex Underwater? loading...
How do Animals Have Sex Underwater?
Speed, angle, and agility combat the difficulties of aquatic mating.
Mysterious Shark Killer (Partially) Identified loading...
Mysterious Shark Killer (Partially) Identified
Scientists have discovered a surprising culprit behind a rash of shark strandings in California and elsewhere, but many questions remain.
These Sharks live to be 400 years old loading...
These Sharks live to be 400 years old
It is now the longest living vertebrate on the planet
These Sharks Thrive Inside an Underwater Volcano loading...
These Sharks Thrive Inside an Underwater Volcano
Scientists bring robots to the "Sharkcano" to better understand the harsh, mysterious place.
Watch a Shark Rescued From a Line by Daring Beachgoers loading...
Watch a Shark Rescued From a Line by Daring Beachgoers
As more than 10,000 blacktip sharks congregate merely 100 feet from the coast of Florida, dangerous interactions with people sometimes occur.
Great White Sharks on the Rise in This Vacation Town loading...
Great White Sharks on the Rise in This Vacation Town
For the second year in a row, the number of great white sharks migrating to Cape Cod is increasing.
10 Things You've Missed Since Trump Became President loading...
10 Things You've Missed Since Trump Became President
Here are some of our stories that you may have missed in the controversial opening weeks of the Trump presidency.
Shark Surprises Aquarium With Rare ‘Virgin Birth’ loading...
Shark Surprises Aquarium With Rare ‘Virgin Birth’
For the first time, scientists have recorded a shark switching from sexual to asexual reproduction.
Why the World's Biggest Sharks Love Mafia Island loading...
Why the World's Biggest Sharks Love Mafia Island
Scientists hope the whale sharks that live around the East African island will help them better understand how to preserve the species.
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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