The chambered, or pearly, nautilus (Nautilus pompilius) is a charismatic cephalopod species known for its exceptional spiraling, chambered shell. It belongs to a family that has barely changed since ...

Mirroring the Fibonacci number sequence (made famous in The Da Vinci Code), their optical rotatum propagates in a logarithmic spiral that is seen in the shell of a nautilus, the seeds of a ...

Its tail and fins stick out from the shell or box. Considered a living fossil because it has been around for centuries, the chambered nautilus (Nautilus pompilius) is known for its gorgeous ...

HABITAT: The chambered nautilus lives in deep fore reefs (at about 330 feet ... THREATS: Strong overharvesting to fuel the international shell trade, habitat degradation, and the inadequacy of ...