A shell is fit, when it only has other animals, as some fishes or an human being as an enemy and if it is the strongest in their chain.
with best shelling greetings
Helmut from Innsbruck
Helmut Nisters
Franz-Fischer-Str. 46
A-6020 Innsbruck / Austria / Europe
phone and fax: 0443 / 512 / 57 32 14
e-mail: [log in to unmask]
url: www.netwing.at/nisters/
or
Natural History Department of the
Tiroler Landesmuseum Ferdinandeum Innsbruck
malacological collection
Feldstr. 11a
A-6020 Innsbruck / Austria / Europe
phone: 0043 / 512 / 58 72 86-37