Anatomy

<n>Ammonite</n>, an 1803 illustration by artist <n>James Sowerby</n>.

Plate 38, <n>Peromedusae</n>, from <n>Ernst Haeckel</n>'s 1904 book <n>Kunstformen der Natur</n>.

Barrier Reef Anemones, a chromolithograph by <n>William Saville-Kent</n> from his 1893 book.

Plate X, Alcyonaria, from <n>William Saville-Kent</n>'s 1893 book <n>The Great Barrier Reef of Australia</n>.

<n>Carminodoris grandiflora</n> illustrated by <n>Kumataro Ito</n> during the <n>USS Albatross Philippine Expedition</n>, 1907-1910.

<n>Plate 60</n> from <n>Alfred Goldsborough Mayer</n>'s <n>Medusae of the World</n> (1910). Lithograph by <n>A. Hoen & Co.</n>

An 1896 X-ray of hand blood vessels by anatomist <n>Hermann Braus</n>.

A 2005 drawing titled <n>Dandelion</n> by the artist <n>Giovanni</n>.

Engraving by <n>Christian Leinberger</n> from <n>Georg Wolfgang Knorr</n>'s '<n>Deliciae Naturae Selectae</n>', 1771.