Sandbassengers

Sandbassengers are a fictional species native to the desert planet of Arrakis in Frank Herbert's Dune universe. They are a type of subterranean organism, playing a crucial role in the planet's ecosystem. These creatures are characterized by their ability to move through the deep sands of Arrakis, a feat made possible by specialized physiological adaptations. Their existence is intrinsically linked to the giant sandworms, also known as Shai-Hulud, which inhabit the planet. Sandbassengers are believed to be a primary food source for the sandworms, forming a vital link in the Arrakeen food chain.

Their life cycle and precise ecological function are not fully detailed in the lore, but their presence is often indicated by disturbances in the sand. They are generally considered elusive and are rarely observed directly by the human inhabitants of Arrakis. Some indigenous cultures of Arrakis, such as the Fremen, have developed a deep understanding of these creatures and their habits, incorporating this knowledge into their survival strategies. The term "Sandbassengers" itself suggests their mode of travel and their role as inhabitants of the sandy depths.