Nautilus are a really interesting group in that regard, an interesting species because they've only just successfully been bred at all.
Nautilus can go a little bit deeper.
Even with a nautilus that eventually gets up to 60 or 90 tentacles.
that because we have nautiluses still around today and because their history goes back 500 million years before the dinosaurs, they are really a one of a kind
So even modern nautiluses and modern cuttlefish which have an internal shell that still has gas chambers in it are limited by depth.
And it's kind of the nautilus problem.
And that happens in embryonic nautilus and in embryonic squid at the same time and with the same number.
And if you cut through a chambered nautilus , which is this shell here, you get a pretty good approximation to that logarithmic spiral in two dimensions.
They're not related to the chambered nautilus , but they look a little bit like him.
And then that evolved in nautiluses at some point to be just this, like, plethora of tentacles.
They're also called paper nautiluses .
and elephant tusks has decided to start regulating the trade of nautilus shells as well, which is very encouraging.
And she commented that, "Nautilus represents a window to the past.
And you'll see over here that the nautilus has been just chugging along from its ancestors all the way back here towards really the root of the tree.
How hard would it be to breed and farm nautilus ?
The question is how hard would it be to breed nautilus ?
This is Nemo on the deck of the Nautilus , arms crossed.
Well, I think of nautiluses as sort of a cautionary tale because they're so beautiful.
Somewhat counterintuitively, I photographed this nautilus shell on a white light background.
this crazy mariner who kidnaps the scientist and takes him around the world in the nautilus , which is his submarine.
And you can take a fairly commonly photographed object, like this nautilus shell.
So obviously, something like this is a photo composition with a nautilus shell and a drawing render of a photo, so it's a drawing
There's the nautilus .
"Rippling" has won two big awards, including the 2013 Nautilus Award and the 2013 "Inc.
to make money, and then there won't be any nautiluses anymore.
And we still have all of our squid, and octopus, and nautilus , and cuttlefish that we talked about.
And then, of course, we still have one cephalopod with an external shell-- nautilus .
If you read "20,000 Under the Sea," by Jules Verne, he tells the story about how Professor Arronax at one point pops up on to the nautilus .
Because argonauts, the octopus can actually come all the way out of the shell, unlike a nautilus , which is like a snail.
There was a point in the book where I was like you should have called it the Argonaut, not the Nautilus .
use their chamber, their shells as a buoyancy aid, but like chambered nautilus they have air inside their shells, which they use to keep them floating
Now, the oak tree is special because it stands right in the middle of this building, which is wrapped around it, according to the shell of a nautilus ,
Interestingly, by this point here, which is the branching point where you get the lineage of the nautiluses and then the lineage going to all of your modern cephalopods,