ID-181是一種構造簡單的小型生物。牠以長鏈碳氫化合物為食，將其分解為各種組成物質。聽起來很普通，對吧？用途也相當廣泛。但問題出在兩件事：首先，181繁殖速度極快、食量驚人，而且極難消滅。其次，181最愛吃的正是石油。
英文原文
ID-181 is a simple little organism. It eats long-chain hydrocarbons, breaking them down into their component parts. So far, so basic, you might say. Lot's of applications. The problem arises from two factors. Firstly: 181 is fast-replicating, voracious and very hard to kill. Secondly: 181 loves eating oil.