Kunstformen der Natur, translated as Art Forms of Nature, is a book of lithographic and autotype prints by German biologist Ernst Haeckel. Originally published in sets of ten between 1899 and 1904 and as a complete volume in 1904, it consists of 100 prints of various organisms, many of which were first described by Haeckel himself.
Kunstformen der Natur was influential in early 20th century art, architecture, and design, bridging the gap between science and art. Among the notable prints are radiolarians, cnidaria, siphonophorae, semaeostomeae, and other medusae.











