cittamani:  Scanned from Ward, P.D. (1988). In Search of Nautilus: Three centuries of scientific adventures in the deep Pacific to capture a prehistoric—living—fossil. New York: Simon and Schuster.

cittamani: “ Scanned from Ward, P. In Search of Nautilus: Three centuries of scientific adventures in the deep Pacific to capture a prehistoric—living—fossil. New York: Simon and Schuster. ” The chambers of the shell, giving the animal its.

Nautilus - a pelagic marine mollusc of the cephalopod family by Dave Deepwater.

Nautiluses are the sole living cephalopods whose bony body structure is externalized as a shell. The animal can withdraw completely into its shell and close the opening with a leathery hood formed from two specially folded tentacles.

Nautilus

Description and wallpapers of Chambered Nautilus, Perlboot (Nautilus pompilius).

Beautiful, mysterious—and little changed in 150-million years. Have you seen them? We have chambered nautilus in our new special exhibition, Tentacles: The Astounding Lives of Octopuses, Squid and Cuttlefishes.

Chambered Nautilus - Beautiful, mysterious—and little changed in years. We have chambered nautilus in our new special exhibition, Tentacles: The Astounding Lives of Octopuses, Squid and Cuttlefishes.

The logarithmic spiral of the chambered Nautilus shell

artemisdreaming: “ Above: The logarithmic spiral of the chambered Nautilus shell. stephen w morris . The Chambered Nautilus .

Gulden Snede / A-maten

A snail's shell, a hurricane, a whirlpool and our own galaxy all share the same distinct spiral shape. The same math pattern governs them all.

The nautilus is considered to be a living fossil. It's remained largely unchanged for the past 500 million years, since the Triassic period. The nautilus usually inhabits ocean depths of about 300m, rising to around 100m at night only for feeding, mating or laying eggs. The average lifespan of a nautilus is around 20 years.

The Nautilus: A Living fossil of the seas

Amongst all underwater creatures, the curious-looking nautilus is the one creature that fascinates me the most. The Nautilus is known as the living fossil due to the fact that

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