I found this at my grandparents house hidden away. Except for the base it is completely made of shells! The date on there is 1885 making it 129 years old.
It is a bit gaudy as well as wonderful. The only place this kind of craft is referenced is at the Conchological Society:
This sculpture reminds me of another obscure craft - fish scale embroidery:
Dimensional Embroidery and my Azorean heritage