Sand animation
Sand animation is a form of stop motion that manipulates images formed with sand under a camera to create animation. A sand animator will make incremental changes in the sand, taking one frame with each change to create a sequence of movement. Sand animation can also refer to a performance in which an artist tells a story through a series of images drawn with their hands in real time using sand, usually projected through a live camera feed and accompanied by music. A sand animator will often use the aid of an overhead projector or lightbox (similar to one used by photographers to view translucent films) to illuminate the sand from behind, manipulating the light coming through the sand to create shading and lines.
This style is particularly well-suited to animating silhouettes, and changing the coarseness or density of the sand can be used to create effects depicting smoke or clouds.