Tour an island built by volcanoes, but sculpted by ice. About 1.5 million years ago, a sheet of ice descended from the north and covered the land. Today, massive glaciers continue to carve marine cliffs and cut down mountains.

Across Africa 97% of black rhinos have been killed for their horns. In 1997 the species was declared officially extinct in Zambia. But now, thanks to an ambitious reintroduction plan, they're back. Poaching hasn't gone away – their horns are still prized in Asian medicine. But a small, dedicated team are fighting to keep them safe. This is the frontline of conservation – it doesn't get any tougher.

A wild and remote chain 400 kilometres south of Cabo San Lucas in the eastern Pacific, the Socorro Islands have been called the Mexican Galapagos. They're known for jaw-dropping encounters with giant Pacific manta rays, hammerhead schools, dolphins, and tiger sharks.

The islands of the Bahamas are ringed with lush coral, underground cave systems, and plunging barrier reefs. Beyond the white sands and turquoise water, marine life abounds: agile reef sharks, large whitetip sharks, manatees, sea turtles, and wild dolphins.

The Hollywood pride reels after the Nomad's brutal attack on their leader, Ava, leaves her desperately weak and unable to hunt. To add to her woes, her hungry pride start rejecting her. But without her, they struggle to bring down prey.

Observe vet Karina's fight to save a koala mauled by dogs, then face the clinic's toughest customer with vet Tim: a rainbow lorikeet who's quick to bite. Scoop up a peeved possum with rescuer Chantel and bond with Meaghan over a gaggle of goslings.

An Australian family go on an adventure to restore an old hunting ranch in South Africa. Their goal is to rebuild the overgrown habitat, create an eco-tourism ranch, and allow the natural wildlife, including predators, to move back in.

There are eight North African white rhinos left in the world and only four are of breeding age. With the clock ticking on their species, an international mission has been working for several years to move the four to Ol Pejeta.

Observe vet Karina's fight to save a koala mauled by dogs, then face the clinic's toughest customer with vet Tim: a rainbow lorikeet who's quick to bite. Scoop up a peeved possum with rescuer Chantel and bond with Meaghan over a gaggle of goslings.

An Australian family go on an adventure to restore an old hunting ranch in South Africa. Their goal is to rebuild the overgrown habitat, create an eco-tourism ranch, and allow the natural wildlife, including predators, to move back in.

Follow the team in healing and releasing a grumpy sea turtle, and then meet a sea lion with an unusual injury that must be taken by crane to the rescue centre. Find out how the vet aids an aging fruit bat and a community rescues a one-eyed seal pup.

Stalk the seas with sharks as they hunt using heightened senses and killer instincts. Watch a whitetip reef shark put its electrical sensors to work finding its prey's heartbeat, and the pelagic thresher shark stun its quarry with its whiplike tail.

Navigate the ocean's vast distances, depths, and darkness with nomadic sharks that thrive in the blue emptiness. Meet a lone blue shark traversing stormy Atlantic seas, and hundreds of hammerheads returning to their Pacific island breeding ground.

Step into the Bay of Fundy's surging waters. Learn how this east coast ecosystem sustains an abundance of creatures, including hundreds of thousands of seabirds, the world's fastest predator, and a complex web of invertebrates.

Australia is home to the world's most toxic, venomous and dangerous creatures. From the oceans to the forest, swamps and deserts, it's a continent teeming with a hugely disproportionate number of creatures that can bite, poison or maim.

Observe vet Karina's fight to save a koala mauled by dogs, then face the clinic's toughest customer with vet Tim: a rainbow lorikeet who's quick to bite. Scoop up a peeved possum with rescuer Chantel and bond with Meaghan over a gaggle of goslings.

An Australian family go on an adventure to restore an old hunting ranch in South Africa. Their goal is to rebuild the overgrown habitat, create an eco-tourism ranch, and allow the natural wildlife, including predators, to move back in.

The lions of the Nomad pride rampage deep into the heart of the MK pride's territory, scattering its members and coming dangerously close to the five new MK cubs. Meanwhile, the Hollywoods are recovering, and Ava's survival skills are still intact.

Stalk the seas with sharks as they hunt using heightened senses and killer instincts. Watch a whitetip reef shark put its electrical sensors to work finding its prey's heartbeat, and the pelagic thresher shark stun its quarry with its whiplike tail.

Navigate the ocean's vast distances, depths, and darkness with nomadic sharks that thrive in the blue emptiness. Meet a lone blue shark traversing stormy Atlantic seas, and hundreds of hammerheads returning to their Pacific island breeding ground.

Step into the Bay of Fundy's surging waters. Learn how this east coast ecosystem sustains an abundance of creatures, including hundreds of thousands of seabirds, the world's fastest predator, and a complex web of invertebrates.

Australia is home to the world's most toxic, venomous and dangerous creatures. From the oceans to the forest, swamps and deserts, it's a continent teeming with a hugely disproportionate number of creatures that can bite, poison or maim.

Observe vet Karina's fight to save a koala mauled by dogs, then face the clinic's toughest customer with vet Tim: a rainbow lorikeet who's quick to bite. Scoop up a peeved possum with rescuer Chantel and bond with Meaghan over a gaggle of goslings.

An Australian family go on an adventure to restore an old hunting ranch in South Africa. Their goal is to rebuild the overgrown habitat, create an eco-tourism ranch, and allow the natural wildlife, including predators, to move back in.

Follow the team in healing and releasing a grumpy sea turtle, and then meet a sea lion with an unusual injury that must be taken by crane to the rescue centre. Find out how the vet aids an aging fruit bat and a community rescues a one-eyed seal pup.

Stalk the seas with sharks as they hunt using heightened senses and killer instincts. Watch a whitetip reef shark put its electrical sensors to work finding its prey's heartbeat, and the pelagic thresher shark stun its quarry with its whiplike tail.

Navigate the ocean's vast distances, depths, and darkness with nomadic sharks that thrive in the blue emptiness. Meet a lone blue shark traversing stormy Atlantic seas, and hundreds of hammerheads returning to their Pacific island breeding ground.

Step into the Bay of Fundy's surging waters. Learn how this east coast ecosystem sustains an abundance of creatures, including hundreds of thousands of seabirds, the world's fastest predator, and a complex web of invertebrates.