nautilus shells
Cephalopod's coiled home
Nautilus shells are the spiral, chambered shells of nautilus mollusks—ancient cephalopods related to octopuses and squid.
The shell's mathematically precise spiral, following a logarithmic curve, has made it an iconic symbol in art, architecture, and discussions of natural geometry.
Beachcombers prize them, and cross-sections revealing the internal chambers are popular decorative items: She displayed a nautilus shell on the mantle.
- spiralCurve winding around center
- chamberedHaving enclosed compartments
- molluskSoft-bodied invertebrate, often shelled
- sea creatureOcean-inhabiting organism
- oceanMassive saltwater body
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