Saltworm

Saltworm is a fictional creature that appears in the science fiction novel "Dune" by Frank Herbert. It is a larval stage of a sandworm, the colossal native inhabitants of the desert planet Arrakis. Saltworms are depicted as small, segmented, and extremely voracious organisms. They are primarily found in the deep desert, where they burrow through the sand.

These creatures are known for their insatiable appetite, consuming any organic matter they encounter. Their diet consists mainly of sand plankton and other small organisms that live in the Arrakis desert. However, they are also known to attack larger creatures if given the opportunity. Saltworms are a significant danger to Fremen spice harvesters, as their presence can indicate the proximity of larger sandworms.

The life cycle of a saltworm is intrinsically linked to the larger sandworms. They are thought to be a transitional phase, eventually growing into the adult sandworms that are iconic to "Dune." Their existence highlights the harsh and dangerous ecosystem of Arrakis, where even the smallest inhabitants pose a threat. Saltworms are a testament to the continuous struggle for survival in this extreme environment. They are a vital part of the ecological chain on Arrakis, contributing to the unique and perilous nature of the planet.