Naomi has travelled the globe encountering some terrifying nightmares. Now she looks back at five of mankind's very worst phobias.
Naomi and her crew explore the southern tip of South Africa, and there are plenty of horrors in store as she delves underground into a scary subterranean world.
Naomi Wilkinson heads stateside to see what scary wildlife she can find in California. She kayaks out to find sea otters, then tries getting to grips with some hagfish.
Naomi's search for nightmare critters takes her to the sprawling savannahs of northern South Africa, where she searches for one of the biggest animals on Earth.
Heading into Yellowstone, Naomi prepares to face some of America's most famously fearsome wildlife - bears and wolves.
Naomi counts down through her top ten worst nightmares of the series, revealing which one she has chosen to take the top spot as her very worst nightmare.
Naomi introduces the animals from her adventures which did not make it into earlier episodes. She comes face to face with a jaguar and searches for a grizzly bear.
Naomi Wilkinson investigates the jungles and ancient temples of tropical Belize in search of more natural nightmares, including the notorious whip spider.
Naomi is in the UK, where she meets some hyperactive hares, a miniature mite that lives in an unusual and disturbing habitat and a titanic terror that's taking over ponds.
Naomi Wilkinson travels the coastline of Central America. She has a close encounter with a sea snake and shares a picnic with a hoard of cannibal crabs.
Naomi Wilkinson continues her global adventure in search of nightmares of the natural world. This time she's in Namibia, where she meets some smelly seals.
Naomi Wilkinson explores the US state of Florida on the hunt for more nightmares of the natural world. She rides an airboat into the Everglades and meets an angry alligator.
Naomi Wilkinson's quest to find nature's worst nightmares takes her deep into the jungles of Costa Rica, where she meets the most dangerous spider on the planet.
Naomi Wilkinson travels across South Africa in search of her deadly nightmares of nature. She meets a hippopotamus and a seriously snappy nile crocodile.
Naomi Wilkinson heads north to Alaska to seek out more nightmares of nature. She comes face-to-face with a giant moose and takes a trip down the Chilkat River.
Naomi counts down through her top ten worst nightmares of the series - and reveals what she has chosen to take the top spot as her very worst nightmare.
Naomi Wilkinson travels the coastline of Australia on the hunt for more nightmares of the natural world. She goes for a swim with an enormous saltwater crocodile.
Naomi Wilkinson's search for nature's nightmares take her into the jungles of Queensland in Australia, where she faces her fear of the giant huntsman spider.
Naomi Wilkinson heads into the blistering heat of the Australian outback in search of nightmares of nature. She joins a snake catcher on an emergency call out.
Naomi's on a mission to confront her worst nightmare, as she explores the East coast of South Africa and goes in search of the world's biggest shark.