Section through a nautilus shell
Numéro d’image : 11911718
| Nautilus shell. A section through the shell of a Nautilus (Nautilus sp.). The nautilus has been removed allowing the inner chambers and spiral whorls to be seen. At each shell partition is a knob-like structure forming the siphuncle tube. This thin internal tube (not clearly seen) is used for fluid transfer to regulate buoyancy. Because of this it is sometimes called a chamber snail. As the animal grows,new chambers are added one at a time to its shell. The Nautilus is a cephalopod mollusc resembling a squid in having many tentacles surrounding its mouth. Photographed under coloured lights | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / Bond, Martin |
| Taille de l’image : | 2593 px × 3195 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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