The nautilus is reported to live on the coastal reefs of Bali[2]and Papua New Guinea.

In addition to their trading and commercial value as souvenirs, shells are also owned by museums for collection.

[6] A. perforatus shows a shell shape and coloration very similar to that of A. scrobiculatus and shares with this species the characteristic open umbilicus.

[3] However, it bears highly distinctive shell-ribbing, which is unique among extant ectocochleate cephalopods, and lacks scrobiculate shell sculpture.

The shell also possesses a series of plicae (ribs) on the sides of the body chamber neat the organism's aperture.