Dirty Biology is both an evolutionary exploration and a tour of different kinds of sexual reproduction among species. It may seem like there isn’t that much to say on this topic. However, author Léo Grasset covered a wide array of life-forms, from bacteria to slipper shell mollusks (aka “fornicating slipper snails”) to fig trees to alligators, and the bottom line is that the sexual reproduction of living things is almost as varied as the creatures themselves. Some reproduction is ordinary to the point of boring, but a lot is really weird, and some is downright unsettling.
This is book is dense with explanation, and Colas Grasset’s illustrations (in jest called a “drunk artist’s rendering,” which is totally inaccurate) are both humorous and helpful. To keep interest piqued, the author set this up as a lively narrator (humanoid, nude, and—ironically—sex-less) taking the reader on an educational journey. This set-up works; however, the occasional awkwardness of the French-to-English translation comes through when the innocent-looking narrator utters crude slang, and some of the jokes in this book don’t land.
In writing about gametes and chromosomes, Grasset delved a bit more than was necessary for the casual reader, but this is mostly about the concrete. Dirty Biology effectively presents complex science—which isn’t surprising; Grasset has an entertaining French-language YouTube channel also titled “DirtyBiology.” In addition to promoting that channel at the end, he included a short list of reading suggestions about animal reproduction. As long and thorough as this sequential-art nonfiction is, it covers a tiny fraction of all there is to know.