Despite their similar appearance to nautilus shells, the egg cases of these pelagic octopuses are made with different genes. ... The argonaut's paper-thin egg case helps it survive in pelagic waters.

Because the argonaut still carries around a nautilus-shell-like construction, it has fueled the scientific debate about whether, and how, an animal can lose such a structure during the course of ...

That’s turned out to be nonsense! 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.

Last week the Navy Department changed the numbers of its big V-type submarines to fish names. New names for the V-1 to V-9, in order: Barracuda, Bass, Bonita, Argonaut, Narwhal, Nautilus, Dolphin ...