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 ...

This species of octopus is also known as the paper nautilus (the shell it builds to hold its eggs is made of paper-thin calcium carbonate). The Chinese name for the species translates to “white ...

Argonauts actually make their ‘shells’ all by themselves. It’s these thin, spiralling constructions that were the inspiration for their other name the paper nautilus. Their paper-thin ‘shells’ make ...