Preparing this project and listening to Radio 4 and The Living World's programme on the Ash Black Slug. It's found on Dartmoor and can grow up to 30cm in length, making it the world's largest. On a dank-dark-day such as this, its fungi-munching world is ever more vivid. It has 'flower-like genitalia' and is hermaphrodite, giving it the option of mating with another or going solo, spinning on a metre-long length of mucus. Now for lunch.