"N. p. pompilius" is by far the most common and widespread of all nautiluses. It is sometimes called the emperor nautilus due to its large size. The distribution of "N. p. pompilius" covers the Andaman Sea east to Fiji and southern Japan south to the Great Barrier Reef. Exceptionally large specimens with shell diameters up to have been recorded from Indonesia and northern Australia. This giant form was described as Nautilus repertus, but most scientists do not consider it a separate species.