Endangered Species Act Status Review Report: Chambered Nautilus

This report was produced in response to a petition received from Center for Biological Diversity on May 31, 2016, to list the chambered nautilus (Nautilus pompilius) as endangered or threatened under the Endangered Species Act. On August 26, 2016, the National Marine Fisheries Service announced in the Federal Register that the petition presented substantial information in support, such that a status review for the species should be conducted (81 FR 58895). This report is the status review for the chambered nautilus. This report summarizes the best available data and information on the species and presents an evaluation of its status and extinction risk.