Chambered nautilus

Nautilus pompilius · Nautilidae

The chambered nautilus, also called the pearly nautilus, is the best-known species of nautilus. The shell, when cut away, reveals a lining of lustrous nacre and displays a nearly perfect equiangular spiral, although it is not a golden spiral. The shell exhibits countershading, being light on the bottom and dark on top.

Where the Chambered nautilus lives

Recorded in Ashmore and Cartier Is. (Oceania).

Most records fall in Western Australia, New South Wales, Queensland and Northern Territory.

See the Chambered nautilus’s range on the globe

Conservation status

Vulnerable (VU). At risk: it could become endangered. Categories are the IUCN Red List as republished by GBIF.

Sources

The range is a density of 11,441 georeferenced GBIF records, not an expert-drawn map. Description from Wikipedia.