The female nautilus, also known as an argonaut, is an octopus that constructs its own ornate shell or egg case from a substance it secretes from two of its eight tentacles. From a distance, the shells ...

Scientists are studying how the argonaut octopus evolved the ability to produce a floating shell-like structure to care for its offspring. By Sofia Quaglia Argonauta Argo is not a typical octopus.

Argonaut octopuses are rarely seen by humans, as they live in the open ocean away from shores. Females have a thin shell that carries their eggs, giving them the nickname ‘paper nautilus.’ Males have ...

A marine biologist documented her rescue of a rare paper nautilus, “one of the ocean’s weirdest animals,” as she helped the cephalopod find its way back into deeper waters. Australian marine biologist ...