On a trip to Mexico, Steve Backshall takes to the water in search of a monster of the deep seas and searches for snakes in the desert.

Steve tracks the weirdest-looking fish on the planet, comes face-to-face with a giant Pacific octopus and goes kayaking with killer whales.

Steve Backshall takes to icy waters in search of the world's biggest sea lion, and there's a surprise in store when he meets the infamous black bear.

Steve and the crew are thrown deep in the steamy rainforests of Costa Rica. They are on a mission to find the largest cat in South America, the jaguar.

In the jungles of Costa Rica, Steve is strangled by a boa, gets hands-on with a poisonous frog and nearly gets a nip from a blood-sucking vampire.

Steve chases a deadly racer snake downriver and even faces his fears to handle some giant bullet ants, while on the hunt for a harpy eagle.

Steve Backshall explores the Indian Ocean, searching for a fish that can weigh as much as a double decker bus, and looking for the fastest fish on the planet.

In South Africa, Steve Backshall swims with a pack of 30 blacktip sharks, examines a nest of killer bees and encounters a black eagle.

Steve Backshall is in Namibia on the trail of Africa's big cats. Donning a camouflage suit, he tries to beat a leopard at its own game, before witnessing a pride of lions hunting.

Steve encounters gremlin-like aye-ayes and Madagascar's most ferocious carnivore as he searches the vast island for contenders for the Deadly 60.

Steve is in Uganda, getting up close and personal with gorillas in the mountains, squabbling baboons on the savannah and chimps in the forest.

In Thailand, Steve comes face-to-face with the longest venomous snake in the world, the king cobra, whose bite could kill an elephant.

In the Philippines, Steve goes nose-to-nose with a living dinosaur and meets an arachnid with legs four times longer than its body.

Steve dives in the beautiful waters of the Philippines to check out a shark that spends most of the day 550 metres below the surface.

Steve Backshall takes a look at dogs and their distant relatives, wolves. He heads to the Arctic Circle where huskies show him a thing or two about stamina.

Steve and his trusty team head to the frozen north of Norway. He follows the tracks of Europe's largest cat, the elusive lynx, up into the hills.

Steve and the Deadly 60 team are on their home turf, the UK. The adventure begins in a lake as Steve dives in to track down a deadly monster lurking in its depths.

Steve heads for the marshlands of Argentina, where he searches for an anaconda and swims in piranha-infested waters.

Steve and the crew are in Peru, searching for elusive giant river otters, when Steve has a chance encounter with the largest reptile in South America.

A behind-the-scenes look at how the series is filmed, from where the team eat and sleep to the extreme measures they have to take as they travel.

Steve Backshall demonstrates how reading the tracks and signs left by an animal can lead to fantastic encounters.

At the Museum of Natural History in Oxford, Steve takes a look inside some of the top predators featured on Deadly 60 to find out what makes them so deadly.

Steve is spat at and bitten by scorpions, spiders and snakes in his quest to prove that venom is one of the most lethal weapons of the animal kingdom.

In this special episode, Steve shares stories of the contenders that didn't quite make it onto the Deadly 60 list.

Steve Backshall reports on animals that are endangered, and explores why the chimpanzee, mountain gorilla and harpy eagle are threatened with habitat loss and their populations severely depleted. In Madagascar, he also meets the most bizarre creature he has ever seen - the aye-aye.