What is the largest living organism currently known to man?

The story behind the answer

Honey fungus (Armillaria) holds the record because a single genetic individual can spread its underground mycelium over miles, making it one continuous organism. The largest known example, in Oregon’s Malheur National Forest, spans about 3.4 square miles (8.8 km²) and may be thousands of years old. By contrast, the blue whale is the largest animal, the redwood is among the tallest/most massive trees, and a coral reef is a vast ecosystem made of many organisms, not one.

Remember it as the “humongous fungus”: a hidden network beneath the forest floor, slowly spreading and digesting wood. Its scale and longevity show how life’s biggest giants aren’t always the