WebThese unique eyes contain over 1,000 light receptors, more than any other animal, and allow horseshoe crabs to see hundreds of copies of the same image. An additional eight eyes run along the sides of the body. These simple eyes measure day length, and the intensity of visual and ultraviolet light. This combination of ten eyes allows horseshoe ... WebMar 20, 2024 · by Stephanie Smelyansky figures by Jovana Andrejevic. Nature knows to quit when it’s ahead–just take a look at the horseshoe crab. Since its origins 450 million years ago, the animal has remained relatively unchanged. This living fossil continues to trudge through shallow, brackish waters, its large tank-like shell protecting its soft, wriggly …
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