Naomi has travelled the globe encountering some terrifying nightmares. Now she looks back at five of mankind's very worst phobias. Starting off with some sizeable spiders, Naomi gets close up to a tarantula and Australia's dreaded huntsman. She then dices with darkness, taking on Yellowstone's wilderness in the pitch black. Meeting dung beetles and some unsavoury leeches, Naomi tackles our inbuilt fear of disease and then goes on to conquer heights with help from a peregrine, a condor and some mountain goats. But all of this pales in comparison to Naomi's biggest fear as she dips into the deep waters of Monterey, Durban and the Great Barrier Reef. Show less