Page 60 - Engineering in Nature

Engineering in Nature

compatible with the visual center in the brain. For instance, the
snake's eye has sensor regions that are activated by heat rays. Nerve
cells carry the image as it is to the brain, which then interprets these
signals as heat waves.

Designs such as these could not possibly come into existence by
chance, and are among the proofs that God created all living things.
Considering such examples is important for understanding the
mightiness and the limitlessness of His wisdom. The salmon is thus
one of these proofs of creation.

THE SALMON'S ASTONISHING DIRECTION FINDING
SYSTEMS
In the rivers of the western shores of North America is born one of
the world's most fascinating migrants. This is the salmon, which
braves all kinds of difficulty in between rivers and streams and the
open sea.
The salmon's life cycle begins when the female deposits eggs in the
upper parts of a river or stream, has them fertilized by the male, and
then covers them over with gravel (or sometimes sand).
Salmon generally deposit their eggs at the end of summer or in au-
tumn. Following the incubation period, the tiny young usually hatch
out at the end of winter. During their first few days, the young have a
yellow yolk sac under their stomachs which contains the necessary
foodstuffs for them. During this period, the young hide under peb-

bles that protect them from predators until their sacs are been used
up.
A few weeks later, the salmon grow large enough to find their own
food. They live in the river for approximately one year, while contin-
uing to grow in size.

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