The New Zealand Flatworm can vary from 5mm to 6.7 inches from newborn to adult. When the New Zealand Flatworm is resting it curls up into a ball and looks almost like a extremely small swiss role. When the flatworm begins to move it uncurls and the circular massacres beneath the epidermal cells at the front contract. The head extends forward and becomes as thin as pencil led. The head is raised and lowered repeatedly well the rest of the body contracts an produces a mucus to reduce friction. They can achieve speeds up to 17m per hour.