Auricular Cell (1894) by Odilon Redon. Original from the National Gallery of Art. Digitally enhanced by rawpixel. Free Image from public domain license 
Beatrice (1897) by Odilon Redon. Original from the National Gallery of Art. Digitally enhanced by rawpixel. Free Image from public domain license 
Marine life Bathypolypus octopus illustration from Deutschen Tiefsee-Expedition, German Deep Sea Expedition (1898–1899)… Free Image from public domain license 
Collection of various whales from A history of the earth and animated nature (1820) by Oliver Goldsmith (1730-1774).… Free Image from public domain license