The Spookfish and Our Dark Vision.

SCIENTIFIC literature; EXTRASENSORY perception; DEEP-sea fishes; NATURAL history; VISUAL fields; VISION

This packing and stacking of photoreceptive rods across all four retinas soon adds up, as Douglas explained: "In Doli, it makes up about half the depth of the various retinas, whereas in humans it makes up just a fifth." FEATURES The typical person, as Leonardo da Vinci noted, "looks without seeing, listens without hearing, touches without feeling, eats without tasting … [and] inhales without awareness of odor or fragrance." In contrast to ours, where rods jostle for position with cones, the fish retinas are made up entirely of rods. Deep-sea fish also possess a layer of crystals beneath their retina; this tapetum reflects any photons that failed to initially hit the retina back into the eye. [Extracted from the article]