Gemeinnützige Naturgeschichte des Thierreichs, bd 2 plates, Berlin, bei Gottlieb August Lange, 1780-1789, Zoology, Harbour Porpoise, Porpoise, Marine Mammal, Phocoena, Toothed Whale, Whale, Cetacea, Marine Biology, Phocoena Phocoena, A depiction of a bottle-nosed dolphin, scientifically known as Delphinus Phocæna (Linnaeus), gracefully swims across a scene that includes subtle underwater vegetation. The artwork highlights the dolphin's streamlined body and prominent dorsal fin, emphasizing its elegance and fluid movement in the water. Below the illustration, the title includes the species name along with translations in German and English, showcasing the historical context of marine biology and the classification of marine life. The background features gentle, wavy lines that suggest the movement of water, enhancing the sense of aquatic environment.