Observed arrival · 2026-11-08
Half an Eye: an atlas of eye evolution
An open book tracing the evolution and variety of eyes, with chapters, an animal atlas, and responses to common claims about eye evolution.
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- Readers curious about how animal eyes evolved
- Worth noticing
- The atlas currently has one animal entry, Euglena; chapters are released as they are checked against sources.
Field notes
The contents connect four sections to the peak sensitivities of human photoreceptors, then range across camera, compound, and mirror eyes, vision without eyes, and trade-offs. Several chapters remain marked “coming,” and the atlas currently lists only Euglena. The homepage also provides a claims-and-responses section and identifies CC BY 4.0 for text and original figures, with code under the MIT licence.
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