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The host explores the landscapes of an expansive seabed in Nazare, Portugal, and heads to the picturesque locales of Victoria Falls and the American Midwest.

A group of brave experts containing filmmakers and adventurers, look for the most stunning natural phenomena around the world in order to apprehend the beauty.

Steve Backshall explores the various animals, like ring-tailed lemurs and a tiny brown banana frog, that use amorous glances and tantalising moves in pursuit of romance.

Explore some of the extraordinary moves that animals perform to survive all aspects of life, including getting around, finding a meal and escaping from predators.

An emperor penguin chick spends its first precarious months on the ice, growing up in the world's most extreme nursery in the harsh environment of Antarctica.

There are ceremonies around the world that induce awe and agony as they mark the events of a person's life through birth, coming of age, marriage and death.

The host explores various rituals from all over the world, shedding light on their cultural roots, historical background and emotional significance.

The host explores various rituals from all over the world, shedding light on their cultural roots, historical background and emotional significance.

Steve and the crew are back in Australia as he dangles beneath a helicopter and is dropped into a giant, wild saltwater crocodile nest.

In New Zealand, Steve descends deep into the Waitomo Caves to find an unusual predator that lures insects to their death with a lethal light show, the glow-worm.

Steve and the crew are back in South Africa to witness Africa's deadliest snakes including spitting cobras, the super-sensitive boomslang and split-second striking puff adder.

Steve and his crew are in the jungles of South America where they head into the crocodile-infested waters and encounter an electric eel. Later, they meet the black piranha.

Steve Backshall and the crew head to the mountain kingdom of Nepal to search for more animal predators to add to his list.

Steve travels to the Venezuelan wetlands looking for the biggest snake in the world, the mighty green anaconda, capable of growing to over six metres in length.

Straight Tail, the last Asian Lion leader, faces rivals seeking to kill his cubs and dethrone him. A deadly virus also threatens his species.

Maya, the new elephant herd leader, faces a big test. She must guide her herd safely through a harsh summer and destructive monsoon floods.

Maya, the new elephant herd leader, faces a big test. She must guide her herd safely through a harsh summer and destructive monsoon floods.

The presenter explores Asia, which is the largest and most extreme continent on the planet, stretching from the Arctic Circle in the north to the tropical forests on the equator.