What is the Biggest Living Thing in the World?

The world’s biggest living thing is a giant fungus in the Malheur National Forest, Oregon. It spans a total of 2200 acres of area or just short of 9 km². This enormous mushroom is of a special species called Armillaria Ostoyae, or Honey Mushrooms. There has been some debate as to whether or not this mushroom is indeed one organism or many together in a colony.