69 Photoshots around the model of this Cowry (Cowrie) shell picked from the beach.

This model has 180,000+ Mesh Faces, recommended to slow your printer speed to get the most detail out of it (perhaps 40mm-60mm/s for infills and perimeters)

The shell is all rounded on every sides, to print with smooth details. Either:
1) Use dis-solvable filaments as supports
2) Slice the shell into half and glue the 2 pieces together when printed out
3) Use the normal way of using supports/pillars to form an artifical base. (Note that the surface might be rough when the support breaks away, use a 400 gritt sandpaper to sand it down to level)