Researchers from multiple universities have discovered that heart cockles possess aragonite-based fiber-optic structures in their shells, allowing 11-62% of light to reach symbiotic algae while filtering 5-28% of harmful UV rays. This natural marvel, the first of its kind in any organism, showcases an evolutionary leap in light transmission. Scientists believe mimicking these designs could lead to cheaper, more efficient fiber-optic cables. Who knew shellfish were the unsung heroes of internet tech?