The largest living organism covers 3.5 square miles

The largest living organism is a fungus covering 3.5 square miles in Oregon. A single Armillaria ostoyae, honey fungus, in Malheur National Forest spans over 2,385 acres, weighs up to 35,000 tons, and is estimated at 8,000 years old. It spreads underground via black shoelace-like rhizomorphs that seek trees and kill them. From above you see only clumps of honey mushrooms after rain. Below, it is one individual. It is bigger than blue whales and sequoias, and it has been killing forest continuously since before Stonehenge was built.