Fuel Gel is a liquid in Metroid Prime 3: Corruption used primarily as fuel for most ships in the cosmos, including Samus' own. Acting as a gasoline of the Metroid fictional universe, it is volatile and will ignite easily. Fuel Gel is found on many planets, though the main supplier is planet Bryyo. According to the Gel Puffer's Logbook entry, it gives off toxic vapor. Interestingly, several different species have evolved not only to live in, but thrive on fuel gel, including Gel Rays, Gel Puffers, and Gelbugs. It is likely that this source of fuel replaced Afloraltite.