After seeing this video, I started work on some worms. Here is the first one in all it's slimy glory. On the short side for ease of storage.
Base is a 2" metal washer but it is hard to notice.
Dwarf on 25mm base (D&D Miniatures War Drums #14 Warpriest of Moradin) for size comparison. The Grid is actually a Go board, so it isn't a 1" grid.
Colour is kinda off in this pic, but here is a good size comparison.
Rotation of the worm. Camera isn't good at video.