Back viewed of eight armed cuttlefish from Zoological lectures delivered at the Royal institution in the years 1806-7… Free Image from public domain license 
https://www.rawpixel.com/search/Laura%20Troubridge?sort=curated&page=1Mermaid from The Story Of The Mermaiden, Adapted From… Free Image from public domain license 
Male silhouette holding a skull from Mr.Grant Allen's New Story Michael's Crag With Marginal Illustrations in Silhouette, etc… Free Image from public domain license 
Whale from A Whaling Cruise to Baffin's Bay and the Gulf of Boothia (1874). And an Account of the Rescue of the Crew of the… Free Image from public domain license 
Vintage Victorian turtle engraving. Original from the British Library. Digitally enhanced by rawpixel. Free Image from public domain license 
Vintage European style crown engraving from Feda, With Other Poems, Chiefly Lyrical by Rennell Rodd (1886). Original from the… Free Image from public domain license 
Vintage Victorian style angel engraving. Original from the British Library. Digitally enhanced by rawpixel. Free Image from public domain license