Nautilus Animal Pictures
Nautilus pompilius
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Nautilus pompilius (chambered nautilus, pearly nautilus), a species of cephalopod in the family Nautilidae: longitudinal section of shell showing chambers.
A longitudinal section of a nautilus shell, showing chambers.
Nautilus in Berlin Zoo Aquarium J. Baecker / public domain https://commons.wikimedia.org/wiki/File:Nautilus-JB-01.jpg
Today, nautiluses are confined to the Indo-Pacific, with most located near coastal areas of the Indian Ocean or the western Pacific Ocean.
While the shell of a chambered nautilus is there to protect it from predators, it doesn't help protect it from humans who want to sell its shell.