A book of whales, London, J. Murray, 1900, whales, Wood's Hole, porpoise, finless porpoise, Neophocaena, taxonomy: family= Phocoenidae, This detailed scientific illustration features various anatomical studies related to marine life. The top section depicts the embryo of a species related to the genus *Nomeni*, highlighting the structure of dorsal dermal plates. The middle section showcases the dorsal fin of a porpoise, emphasizing dermal ossicles, which are bony structures that contribute to the fin's robustness. The bottom section includes another portion of skin from the same genus, again illustrating dermal ossicles, providing insight into the protective features of the species. Each figure is meticulously labeled, indicating the source as a work by Kükenthal, which signifies a focus on marine biology and the study of aquatic organisms.