Is there any evidence that eyes have evolved several times independently of one another?
Scientists have discovered a bristle worm with such sharp-seeing eyes that they can measure up to those of mammals and octopuses. The Vanadis bristle worm, also known as polychaetes which are nocturnal, has eyes as big as millstones, relatively speaking. As a set, the worm’s eyes weigh about twenty times as much as the rest of the…