Internal Structure of Seashells **

Internal spiral is paper thin.

Outer shell can be incredibly thick / strong.

There seems to be protein incorporated with calcium salts.

It feels incredible that the mantle of a sea gastropod is able to engineer so exactly the molecules to create unique structures

These pictures are to correct a pattern made in post of 19/3/2012.

The outside tip of a shell is incredibly hard
and the inside paper thin.

This is important in making models of  work, especially tall thin shells, to avoid bulky crochet inside.










X rays of Seashells


http://www.seashellarchitecture.com
http://shellography.com    The Art of the Ocean by Dr Thad Thomas,  4 galleries incl x rays.
YouTube,  the seashell x ray man, 22 August 2010

Mathematics of Seashells by Xahlee, 2006-05.
The Algorithmic Beauty of Seashells, by HansMeinhardt,Przemyslaw,Prusinkiewics and DeborahRFowler.   from Amazon.....

__________________________________________________________________