"Stingray Spots Reveal New Method for Creating Blue"

Researchers have discovered that bluespotted ribbontail rays produce their vivid blue spots through unique nanostructures that scatter light, rather than pigments. This structural color is unusually bright and angle-independent, achieved by a disordered array of scattering elements and a melanin layer that absorbs other colors. This finding not only advances our understanding of natural coloration but also has potential applications in creating chemical-free colors for textiles and displays.