i dont see how this makes sense to anyone.... snails die when on there backs? if this were true then there surely would be very few in the wild. I had a 7 inch conch that could flip itself back over if it fell off the rocks and landed on its back. These snails that die when on their back must surely be sick or something. no animal is going to grow in such a way that it will die if put in that kind of "comprimising" situation. snails have an amazing ability to reach far outside of thier shells with thier foot. They can extend it much farther than needed to right itself. I have never had a snail die due to being on its back, i have kept all types, nassurius, cerith, turbos (both types) conchs, etc. never had a problem.