I have tried to register my snail with the Guinness people and the local record keepers, but Guinness does not distinguish species-specific records and the local people only want 'native' species like Roman snails. Therefore I suggest a new category be created for largest specimens with threads covering either groups like land snails or Achatinids or specific species or subspecies. This topic would be of interest for pet owners in general as it would provide reasonable expectations of what is actually possible for each species, but it would also provide those people with some mastery of their field to shine. I tried to add a picture to this post but something went wrong and now I am rewriting the post. I will try a new post with the picture. My Lissachatina reticulata has a current height of 180 mm, but has lost a mm through decollation, so would have been bigger. He is still growing and last night had a good appetite, so maybe I can still expect great things of him. He hatched on Halloween and is called The BIG Monster.
Your best bet is to upload to flickr or similar image hosting site and copy the image location url and then paste that into your post with (img)URL HERE (/img) But with square rather than round brackets and no spaces
I had a h. aspersa snail several years ago whose shell was about the size of a silver dollar around. I didn't know anything about snails back then, and he managed to escape his cage and my dog got him. That was not fun.
The following statement is true: the preceding statement is false.
If you can figure that one out, then you are either Sherlock, a Ravenclaw, or just plain strange.