Freak or Unique

S1 E6: Barney Harwood and Gemma Hunt discover the world of Australia's Barrier Reef, home to some of the most beautiful, colourful and deadly animals on the planet, and certainly some of the strangest! Everyone has a freaky party trick and the ocean underwater world is no exception. Spewing up silly string, blowing up like a balloon and changing colour in the blink of an eye, are just the beginning. No party is complete without this freak-tastic lot. From the bizarre to the hair-raising to the downright disgusting, these underwater creatures really know how to shock.