Don't play hide-and-seek with mantis shrimp - they see all of the things!🦐 A crazy 16 photoreceptors - we only have 4 - allow them to see polarized light & 5 frequencies of ultraviolet, on top of all the usual colors. 📷 S. Arunrugstichai/Getty Images
of the subjective experience of color, different organisms have evolved to view the world differently, with eye structures and configurations optimized for various kinds of existence.give them a panoramic view of their surroundings, which helps both to see predators coming, and to avoid obstacles as the animals make an escape. Meanwhile, nocturnal predators have vertical pupils to maximize their night vision.
Yet other kinds of eyes out there in the magnificent, wide, diverse world see in ways we may not even begin to imagine. Here are some of the strangest eyes in the animal kingdom – jeepers creepers, indeed.No other animal has a pupil quite like the cuttlefish. It's shaped like a W, a trait biologists have determined
a vertically uneven field of light, which is common in the watery depths they inhabit. But that's just the start.Cuttlefish only have one type of photoreceptor, which should mean they can only see in monochrome. Yet those strange, wide pupils of cuttlefish and other cephalopods could facilitate an entirely different way of seeing color – by using the way light passing through a prism splits into a rainbow.
Cephalopods only have one photoreceptor type, as we have established. Humans have four, three cones and a rod, which means we have color sensitivities at three peak wavelengths, what we call trichromatic vision. Birds have six – four cones giving tetrachromatic vision, a rod, and an unusual double cone for non-colored motion perception.In addition, a protein in their eyes could allow them to see magnetic fields. Migratory birds can navigate extraordinarily well, and for a long time, it wasn't clear exactly how they achieve this.
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