'John Long is renowned as the discoverer of the earliest evidence for internal fertilisation. In a book encompassing 380 million years of sexual evolution, he lays the full significance of his discoveries in fascinating context' - Tim Flannery. 'You are now holding a compromise between a book that you should carry hidden inside an opaque bag, and a sober respectable scientific treatise. It's a deliciously written account of the evolution of sex, in all of its bizarre manifestations. Read, blush, and enjoy!' - Jared Diamond, Professor of Geography at UCLA, Pulitzer-Prize-winning author of Guns, Germs, and Steel. 'I shall never feel the same about ducks again. Or fish. This is first class science told with brilliance and flair. Read and be astounded.' - Robyn Williams