{{commons|Kunstformen der Natur|Kunstformen der Natur (all 100 prints)}}
* [http://www.mblwhoilibrary.org/haeckel/index.html Marine Biological Laboratory Library] - An exhibition of material on Haeckel, including background on many ''Kunsformen der Natur'' plates.
* [http://www.umassd.edu/cvpa/universityartgallery/ernsthaeckel.html University Art Gallery, University of Massachusetts Dartmouth] - An Ernst Haeckel exhibition from 2005 pairing prints from ''Kunstformen der Natur'' with modern sculptures.
* [http://caliban.mpiz-koeln.mpg.de/~stueber/haeckel/kunstformen/liste.html Kurt Stüber's Biolib] - An online version of ''Kunstformen der Natur'' with 300 dpi scans of the 100 plates, their scheme plates, the accompanying description, table of contents and supplement pages.
