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but the color of the animal in those white-shelled abnormalities is always the usual velvety jet-black
colonies can reach up to a meter across
In some areas
Young shells have weak vertical ridges
On deep reefs
Nautilus Shells 7”+ Pearl Chambered knobby but the color of theNautilus have a well developed nervous system and highly developed eyes. Surrounding the mouth are many tentacles. Nautilus are the only cephalopod to have a true external shell. Naturalists, mathematicians and physicists have been fascinated for years by the form of this shell. The spirally coiled, chambered shell is perfectly proportioned mathematically, a remarkable feat of natural engineering. Air is moved through the many chambers to control
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