Chambered nautilus - Wikipedia
https://en.wikipedia.org/wiki/Chambered_nautilus
WEBNautilus repertus. Iredale, 1944. The chambered nautilus ( Nautilus pompilius ), 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 ...
DA: 55 PA: 71 MOZ Rank: 14