Mediterranean marine worm has developed eyes as big as millstones
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Mediterranean Worm Evolves Millstone-Sized Eyes
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<p><strong>Scientists are amazed at the discovery of a bristle worm with such sharp-seeing eyes that they can measure up to those of mammals and octopuses. The researchers from University of Copenhagen and Lund University suspect that these marine worms may have a secretive language, which uses UV light only seen by their own species. The advanced vision of such a primitive creature helps to finally settle an epic debate about the evolution of eyes.</strong></p>
Cnidarians, the animal group which includes jellyfish, are brainless, instead getting by with a "dispersed" central nervous system