Natiluses

This term was mentioned today in class and I had no idea what its was, so....

Nautilus belauensis
Scientific classification
Kingdom: Animalia
Phylum:Mollusca
Class:Cephalopoda
Subclass:Nautiloidea
Order:Nautilida
Suborder: NautilinaAgassiz, 1847
Family: NautilidaeBlainville, 1825

"The nautilus is similar in general form to other cephalopods, with a prominent head and tentacles. Nautiluses typically have more tentacles than other cephalopods, up to ninety. These tentacles are arranged into two circles and, unlike the tentacles of other cephalopods, they have no suckers, are undifferentiated and retractable. The radula is wide and distinctively has nine teeth. There are two pairs of gills.
Nautilus pompilius is the largest species in the genus. One form from western Australia may reach 26.8 cm in diameter. However, most other nautilus species never exceed 20 cm. Nautilus macromphalus is the smallest species, usually measuring only 16 cm"

http://en.wikipedia.org/wiki/Nautilus