Coelacanth (SEEL-uh-kanth): a large fish with limblike fins, armored scales and a tail that no other living fish possesses. This prehistoric fish was thought to have died out with the dinosaurs in the great extinction. It has laid hidden deep in our oceans undisturbed and undetected for 70 million years—a true living fossil. The coelacanth is thought to be related to the creatures that grew legs, breathed air and came ashore nearly 400 million years ago.

Tau is dying; a slow shutting-down creeps over his body. It's time to reflect.

Venom expert Dr. Bryan Fry embarks on a dangerous island journey to uncover the deadly secrets of vipers, stonefish and the formidable Komodo dragon.

The Amazon is one of the wildest and least explored parts of the planet. Encompassing 6 countries and 2 million square miles of forest, river and floodplain, it has the highest diversity of life on the planet, but what lies below it is truly shocking. In its deep muddy rivers, clear streams and expansive floodplains a freak-show of fish life has exploded, with some of the strangest shapes and weirdest adaptations on Earth. Hiding in the vast rivers and streams is an electric grid, a bizarre community of fish with a highly sophisticated electric sixth sense. Using electricity, these "Super" fish can communicate wirelessly, control each other remotely and emit shocks that can stop a human heart. This cryptic world has mystified scientists throughout the ages. Now an intrepid scientist, Will Crampton ventures back into the dark jungles where the inspiration for our technology driven world first emerged, in an attempt to unravel their secrets and unlock the electric code.

The ragged-tooth shark has a formidable reputation – but the truth about this animal is very different. We follow this incredible shark on its biannual migration along the South African coast and venture deep into underwater caves to study its dramatic mating behaviour.

A high-tech autopsy on a Nile crocodile unlocks secrets behind its hunting prowess.

In Rwanda, Africa, a new era is dawning after a brutal civil war ripped through the country, killing close to two million people and wiping out its most iconic wildlife: the regal lion. Now, 25 years later, the big cats are being reintroduced to the region to reclaim their throne. Follow this magnificent seven, a collection of five females and two males, as they travel thousands of miles from South Africa to Akagera National Park and attempt to figure out their new land, form relationships, and restore the pride of a nation.

The impressive firepower and fearsome reputation of the cobra family that rules the wilds of Africa and Asia.

A routine drone survey turns deadly when Ryan Johnson, a marine biologist based in South Africa, films a humpback whale being attacked and strategically drowned by a Great white shark. This is a total perspective shift for the creature.

A documentary which follows two lion brothers as they become rulers of a pride in Botswana after a battle for dominance.

A male lion cub is born into a powerful pride and quickly establishes his dominance over his siblings. But after a fight with his father, he is immediately banished from the pride. How will he cope with the brutal reality of the African savannah

Hippos and crocs have lived side by side for millennia, but are they cozy bedfellows or arch-enemies? One is a hefty herbivore, the other is the most successful freshwater predator on the planet, so how do they manage to survive together in the same habitat? They each have a unique arsenal of attributes honed by centuries of evolution; muscle power, bite force and ferocious dentition give them the edge in their environment. But once a year, their peaceful semi-aquatic existence turns into a battle for survival.

A caving expedition recently discovered a community of dwarf crocodiles living in the Abanda Caves, Gabon. The crocs are living in pitch darkness, hunt bats and some have bright-orange skin. Part of the original team returns to find out more about this bizarre phenomenon. It's mission impossible to access the crocs world and there's no way of knowing what they might find.

Incredible Insects A captivating world of creepy crawlies exists all around us. And they are the biggest group of animals in the world, outnumbering humans 200 million to one. Thanks to millions of years of evolution, these invertebrates not only survive in almost every landscape known to man, but also thrive by means of fascinating, and sometimes bizarre adaptations. There's the Bombardier beetle that squirts a boiling hot liquid from its anus, the Assassin bug that turns its victims into soup, and the Parasitic wasp that lays her eggs inside her victims, until her young are ready to eat their way out. We end off with the biggest bugs on the planet: the Atlas moth with a wingspan of over 20 centimetres, the Hercules beetle that can carry 850 times its own weight, and the Giant centipede - big enough to catch flying bats from midair!

Lions and buffalo battle for survival on the African grassland.

Cuba's enforced isolation has resulted in the unlikeliest of marine reserves: a huge, rambling archipelago known as Jardines de la Reina, or "Gardens of the Queen." Stretching around 140 miles along the southern coast of Cuba, it's one of the longest barrier reef systems in the world. Get an up-close look at Fidel Castro's diving playground, a forgotten ocean paradise unseen for half a century, and witness exotic species rarely seen elsewhere in the region. It's the lost jewel of the Caribbean, but how long can this pristine wilderness survive?

A clash of true oceanic titans sees fights in the remote battlefields of Ascension Island. Tuna are often faster, fitter and bigger than the sharks.