I never see the worm on the surface but occasionally I can see it along the side of the tank just below the leaves. I took this photo by looing under the terrarium and to my surprise I found 2 worms. One is in the upper right corner and the other is spread out on the bottom. It looks strange because the view is from the bottom and not the top like we normally see worms.
Check back later to see the other critters I have been observing is this small environment.