I am working on a model of a common name garden snail. To get the anatomy right is not that easy: like with the octopus most of the data available are simple line drawings and schematic illustrations. So, like with any animal I want to do the anatomy of, I have to dissect them myself.
I am not finished yet, one can see its intestines, heart and veins
The house of the snail (and everything else) is as accurate as possible. Here one can see it in 3d: