I linger deep beneath the surface of the Shallow Seas and watch the light from above flicker down through the water. I watch for my prey, knowing I will see them with clarity.
I see all around me with eyes like none other in the universe.
I am a trilobite.
Many millennia from now, humans will try to replicate the special vision that I possess.
But I—gifted with this vision—have one of the very first lenses. They are rigid, crystalline lenses made with an internal doublet structure: two lens layers of different refractive indices acting in combination.
My lenses are corrected for focusing problems that result from rigid lenses. I have remarkable depth of field.
I move again in search of food; the sea is teaming with life. But many creatures will disappear and dry land will appear in coming years.
I see my prey. I make my move.
Now, well nourished, I look up. A large shadow moves across the surface, too far above for me to make out its true shape.
A fallen tree is moving with the rush of water? Or, is it an ark—a sign of life continuing?