Chambered nautilus

16th-century Northern Mannerist nautilus cup

Nautilus shells engraved to commemorate Horatio Nelson, displayed at Monmouth Museum

A nautilus shell was used to fashion this drinking cup depicting Atlas, a legendary titan of Greco-Roman mythology.[6]

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 on the bottom and dark on top. This is to help avoid predators, because when seen from above, it blends in with the darkness of the sea, and when seen from below, it blends in with the light coming from above.

单词	Nautilus shell
释义	Nautilus shell 原声例句白鲸记 Like noiseless nautilus shells, their light prows sped through the sea; but only slowly they neared the foe. 他们轻盈的艇首像无声无息的鹦鹉螺壳，快速地破浪前进，但在靠近敌人时便放慢下来。英语百科 Chambered nautilus 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 on the bottom and dark on top. This is to help avoid predators, because when seen from above, it blends in with the darkness of the sea, and when seen from below, it blends in with the light coming from above.
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Nautilus shell

Chambered nautilus