Across three continents Naomi has faced up to some of nature's biggest nightmares. From snakes, sharks, spiders and scorpions, to spine-chilling environments and terrifying challenges, there have been many twists and turns along the way. In this special programme, she counts down through her top ten worst nightmares of the series - and finally reveals what she has chosen to take the top spot as her very worst nightmare. Can you guess what it's going to be? Show less