Ancient Trilobites Had Crystal Eyes, And They're Still a Mystery
Nature has tried some pretty wild approaches to life's problems over the eons, and that's true for vision.
Nature has tried some pretty wild approaches to life's problems over the eons, and that's true for vision.
DoctorWhookah, This is fascinating! It sounds like something from a sci-if story.
serpentofnumbers, (edited ) I hear they also had a crystal kidney and were afraid to die
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