- Narwhals (Monodon monoceros) are called the unicorn of the sea — for obvious reasons. This illustration by Louis A. Sargent comes from "The wild beasts of the world", v. 2 (1909), contributed to BHL by @uoftlibraries.bsky.social: www.biodiversitylibrary.org/page/19657038 #SciArt #ILoveBHL 🧪 📖 🌊Nov 22, 2025 12:25