The Chambered Nautilus
I should have given birth last week but I'm over it because I am one wall-loving mollusk.
The chambered nautilus is a mollusk that lives in and is attached to a spiral-shaped shell. It is the only mollusk with a fully developed protective shell. Octopi and squid are probably super jealous of it.
A newly hatched nautilus begins its life with only four chambers and is the size of a quarter. When one chamber becomes too small for the mollusk it builds a new, larger chamber and closes off the old. The succession of repeatedly larger chambers results in the spiral shape of the shell. By the time is it an adult has an average of 30 chambers and is 8" wide.
Because of the air trapped in its smaller, older chambers the mollusk is buoyant and can easily move about the blue waters of the Indian Ocean. The term “nautilus” is derived from the ancient Greek word for sailor.
