Where is the largest living organism on Earth?

The largest living organism on Earth is a fungus in the Malheur National Forest in Oregon, USA. Known as Armillaria ostoyae, it spans over 2,400 acres (970 hectares). This fungal colony is connected by a network of underground mycelia and is considered a single organism because it shares a genetic structure. The fungus is capable of spreading over vast areas, growing by feeding on trees and other organic material, and is a fascinating example of an organism’s size and adaptability.