The Chambered Nautilus Shell
The Nautilus Shell has been called the "ship of pearl". The Golden Ratio of Fibonacci is seen in the Nautilus.
The Nautilus has large but primitive eyes and about 90 tentacles but no suckers.
The distribution of the Nautilus is from the Andaman Sea east to Fiji and Japan to the Great Barrier Reef.
This octopus like animal forages for crabs in shallow water at night. During the day they drop down to depths of up to 400metres.
The smaller chambers are full of gas the pressure of which can be changed by the Nautilus to vary the animal’s buoyancy.
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