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nautilus N (sea creatures)

nautilus

حَيَوان بَحْرِيّ مِنْ رَأْسِيَّات الْأَرْجُل

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The nautilus is also a tropical mollusk having a many-chambered, spiral shell with a pearly interior. en.wikipedia.org

The hyponome of the nautilus differs however, in that it is a one-piece flap that is folded over. en.wikipedia.org

It may also take squid, paper nautilus, and swimming crabs, and there is fossil evidence of it scavenging on whale carcasses. en.wikipedia.org

It's visible in the arrangement of petals in flowers, seeds in a pinecone, branches in trees and spirals of nautilus shells, for example. www.ns.umich.edu

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