Researchers at Israel’s Ben Gurion University have found that the Cleaner shrimp’s brilliant white stripes are due to isoxanthopterin molecules in a liquid crystal, just 5 microns thick that cause extreme birefringence (dual refraction light scattering). Now to replicate it!
https://in.bgu.ac.il/en/pages/news/Shrimp-photonics-Palmer2023.aspx