I found something new!

[Callen]

At the base of the rock is a tiny white cylinder that looks like it is made from sand. It has 2 brown antennae sticking out the end. Whole thing might be 1/2 inch long. Any ideas what it might be?

 

[AbsoluteFaye]

Looks like a spoinid worm. Harmless as well.

 

[Callen]

Thanks for the replies!