Page 117 - Miracle in the Eye

HARUN YAHYA
Fish can perceive more than one image at the same time.
A fish's eyes are placed on either side of its head. The image seen by
each eye is recorded in the opposite half of its brain. But since the image is
viewed by one eye only, it is two-dimensional, which prevents the fish from
judging distances. This is why, when it spots some potential threat, both
eyes focus in the same direction to judge the distance. Straight ahead, the vi-
sual arcs of the two eyes overlap to provide a narrow band, where the fish
enjoys binocular vision.
With the exception of a few species, fish cannot see in color. They have
no need to, because only a few meters underwater, most colors are absorbed
and disappear. A fish's entire world is mostly shades of blue and green.
Fish are more sensitive than land animals to dim light, because their
retinas contain a higher number of cells sensitive to low intensities, letting
them make use of every amount of light possible.
Sea turtles generally feed on fish. In the process, they also consume a
large quantity of sea salt, which could be unhealthy if they digested it.
Rather than simply eject salt from the body, the turtle transfers it to special
sacs located on to the side of its eyes. Here, the salt is cleverly recycled and
used to produce tears. 46

Octopus Eyes
Of all the invertebrates, the octopus has one of the most complex eye
structures. As in vertebrates, each of the octopus's two large, complex eyes is
like a camera, in structure, and the creature's vision is acute.
The octopus eye and the vertebrate eye are extraordinarily similar. Each
includes a cornea, an iris, an accommodating lens, a fluid-filled vitreous
humor, and a retina. However, there are major differences. For instance, oc-
topi change their range of focus by moving the entire lens closer or farther
away from the retina, whereas we change the shape of our cellular lens in
order to bring objects into focus.
As mentioned earlier, one of the biggest struggles for evolutionists was
in forming some explanation of how octopus eyes originated. According to
evolutionary theory, octopi (which are invertebrates) and men (vertebrates)
developed completely independently of each other, over time. And yet both

115