(sandtrout) The half-plant-half-animal deep-sand vector of the Arrakis sandworm. The Little Maker's excretions form the pre-spice mass.

Herbert notes in Dune that microscopic creatures called sand plankton feed upon traces of melange scattered by sandworms on the Arrakeen sands. The sand plankton are food for the giant sandworms, but also grow and burrow to become what the Fremen call Little Makers, "the half-plant-half-animal deep-sand vector of the Arrakis sandworm".