Ice-bores are worms that live in the ice-packs of Andoria. They resemble Earth caterpillars and live in large groups called "swarms".

Ice bores generate heat through a chemical reaction, causing them to fall through the ice caves of Andoria. Andorian children often chase swarms for hours; however, it is always best to avoid this. Physical contact with an ice bore can result in third-degree burns, as Shran discovered when he stumbled into a large den as a child and received such burns over half his body. Aenar would sometimes collect ice bores. (ENT: "The Aenar")