Octopus eye v.s. Human Eye

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Across
  1. 4. each of the second pair of cranial nerves, transmitting impulses to the brain from the retina at the back of the eye.
  2. 5. What type of light do octopuses and Humans see?
Down
  1. 1. the opening within the iris through which light passes before reaching the lens and being focused onto the retina.
  2. 2. an animal of a large group distinguished by the possession of a backbone or spinal column, including mammals, birds, reptiles, amphibians, and fishes.
  3. 3. an active predatory mollusk of the large class Cephalopoda, such as an octopus or squid.