sandworm
Sandworm refers to several distinct subjects that share a common name but differ in nature and context. The biological sandworm is a small, segmented invertebrate belonging to the order Oligochaeta that burrows into sandy soils and dunes. It feeds on organic detritus and helps aerate the sand, contributing to nutrient cycling in coastal ecosystems. Species such as Nereis cinerea, known as the European sandworm, are found in temperate coastal regions and are generally harmless to humans, though they may be seen during beach clean‑up operations.
In fiction, the sandworm is perhaps most famously portrayed in Frank Herbert’s Dune series as a gigantic,
A third use of the name appears in cyber‑security: the group known as Sandworm is a Russian