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 ...

Beams of light that can be guided into corkscrew-like shapes called optical vortices are used today in a range of ...

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 ...