Luciferase enzymes in fireflies go through a series of bio-chemical reactions in which they are oxidized for use as fuel to create light which is sent out from the end of their abdomen.
螢火蟲體內含有「螢光」酵素與發光質，二者經連串生化反應，產生氧化作用（燃燒作用）而產生光，再由腹部末端的發光器發射而出。