Page 96 - Not by Chance

94 THE PERFECT DESIGN IN THE UNIVERSE IS NOT BY CHANCE

Some whales and dolphins can hunt in the oceans' dark

depths by using a kind of natural sonar. Female whales in par-
ticular can "see" by means of sound waves. Similar to the act of
radar in the air, the huge mammals send out sound waves to a
certain point. The returning waves are analyzed and interpreted
in the animal's brain, giving it a clear "picture" of the kind of ob-
ject it is encountering, along with its size, speed and location.

These animals' sonic system is so extremely sensitive that a dol-
phin, for example, can make out even the "internal organs" of a
person jumping into the water.
Along with determining the right way to swim, these crea-

tures also use sound waves for communication. Two whales,
kilometers apart, can understand each other, using sound.
It's still not completely understood how these animals pro-
duce the sounds to communicate and find their way. But the
structure of a dolphin's head is known to have an amazing fea-
ture: the animal's skull is insulated against sound so as to pro-

tect its brain from continuous and intense sound bombardment.