The main difference between water hemisphere and water spheres is that the water outlet pattern only covers the top half of the sphere. This enhances the cone of falling water, as the lower hemisphere does not interfere with its operation. The basic operating system is the same as for full spheres, i.e. water discs join together to produce the optical effect of a ball of water. It also comes in a wide range of sizes for use in small or large indoor fountains and outdoor water features.