What is this

[rferraro21]

I'm seeing these cylinder things in the sand, and also these little brown things, it's a new tank with just one snail in there right now.

 

[rferraro21]

There is a really long one

 

[Maritimer]

The cylinders could be the remains of a mucus trail left behind by your snail. Those little brownish gadgets look like bits of shell to me - a common inclusion in some sands.

~Bruce