New imaging technologies have revolutionized the study of developmental biology. Where researchers once struggled to connect events at static timepoints, imaging tools now offer the ability to visualize the dynamic form and function of molecules, cells, tissues, and whole embryos throughout the entire developmental process. Imaging in Developmental Biology: A Laboratory Manual, a new volume in Cold Spring Harbor Laboratory Press' Imaging series, presents a comprehensive set of essential visualization methods. The manual features primers on live imaging of a variety of standard model organisms including C. elegans, Drosophila, zebrafish, Xenopus, avian species, and mouse. Further techniques are organized by the level of visualization they provide, from cells to tissues and organs to whole embryos. Methods range from the basics of labeling cells to cutting-edge protocols for high-speed imaging, optical projection tomography, and digital scanned laser light-sheet fluorescence. Imaging has become a required methodology for developmental biologists, and Imaging in Developmental Biology: A Laboratory Manual provides the detailed explanations and instructions for mastering these necessary techniques.