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Beyond a doubt the weirdest chapter in Toho's Godzilla saga, this eco-conscious entry pits the Big Green Guy against a living mass of industrial sludge dubbed "Hedora." Capable of splitting into numerous satellite monsters and secreting sulfuric acid, Hedora grows exponentially larger as it absorbs more pollution and merely divides again when Godzilla tries to attack it. After wiping out a disco with its toxic secretions (from the monster, not the music), Hedora goes airborne and attacks Mount Fuji, where blasts of electricity and Godzilla's atomic breath finally burn it to a crisp. Oddball stylistic touches, including split-screen animation and a hilarious pop ditty called "Save the Earth" (featuring the lyric "Find a solution to stop pollution..."), helped to condemn the film in the eyes of Godzilla purists everywhere.