Cross-sections through nautilus (Nautilus sp.) shells revealing the spiral structure and chambers (camerae) of mother-of-pearl (nacre). The nautilus is a marine cephalopod related to the squid, which inhabits the Indo- Pacific region.

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Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -, animal, biological, biology, cephalopod, chambers, cross, cross-section, cross-sections, fauna, invertebrate, marine, mollusk, mother, nacre, nacreous, nature, nautilus, pearl, section, sectioned, shell, shells, slice, sliced, spiral, spiralling, squid, wildlife, zoological, zoology