A heart cockle shell has been found to let in light through a design that resembles fiber optic cables. This could inspire everything from helping coral survive to designing new camera lenses.
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If I remember correctly, polar bears' hairs also serve as optical fibers, enabling them to absorb needed solar energy while maintaining thermal insulation and effective camouflage for protection and predation...
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https://skullsinthestars.com/2023/05/14/why-is-the-polar-bear-white-the-optics-of-polar-bear-pelts/
https://www.youtube.com/watch?v=uE59PtBGqus
(Al Quran)