The future of nautilus is also threatened by ocean acidification, which can impair the ability of mollusks to build the shells they need to survive. Today’s petition to the National Marine Fisheries ...

Chambered Nautilus, 'Living Fossil' Depleted by International Shell Trade, Moves Toward Endangered Species Act Protection. OAKLAND, Calif.—The National Marine Fisheries Service today announced it will ...

WASHINGTON (CN) – Noting that “hundreds of thousands” of nautilus shells are traded yearly, the National Marine Fisheries Service has proposed the chambered nautilus for Endangered Species Act listing ...

The chambered nautilus is a popular shell for jewelry and home décor, but unsustainable fishing has put it at risk. From 2005 through 2014, the U.S. alone imported more than 900,000.

I am writing in response to Charles Madigan`s front page story Dec. 16. It very accurately describes the singular beauty of the shell of the chambered nautilus, a feature shared by six species in ...

WASHINGTON (CN) – Due to over-collection for the international shell trade, the iconic chambered nautilus has passed the first hurdle to gain federal protection under the Endangered Species Act. In ...

The chambered nautilus is a sea creature that belongs in the same class as the octopus. Unlike the octopus, it has a hard shell that’s divided into chambers.

With shells that measure up to 10.6 inches in diameter, chambered nautiluses are the largest of the six, and bellybuttons—whose shells max out at 6.3 inches in diameter—as the smallest.

A cross section of a chambered nautilus shell shows the newly defined shape, the "soft cell," repeating outward in a spiral. FlamingPumpkin via Getty Images When humans cover a space using tiles ...