Opening paragraphs.......................

The Kingdom of Morocco has on its most widely used currency bill neither a camel nor a minaret nor a Touareg in desert blue, but the representation of the shell of a very large snail.  The shell of this shore-living marine beast - a carnivore that uses its tongue to rasp holes in other creatures' shells and sip out the goodness - is reddish brown, slender, and spiny, with a long spire and an earlike opening.  It is in all ways rather beautiful, the kind of shell not to idly thrown away by anyone lucky enough to find one.
-Simon Winchester,  Atlantic:  Great Sea Battles, Heroic Discoveries , Titanic Storms, and a Vast Ocean of a Million Stories


As a convenience to those of you curious enough to wonder what the Moroccan 200 Dirham bill looks like, here 'tis: