As far as living animals are concerned the largest living land animal is the African elephant, while the largest of all animals is the blue whale. But what about all living things? To examine this more closely we must consider all living organisms, and the largest one will take many by surprise.
The biggest living thing in the world is a mushroom that was discovered in Oregon. The giant mushroom is called Armillaria ostoyae, commonly known as the honey mushroom. It started life as a single, tiny spore, far too small to see with the naked eye. Over the last 2400 years it has grown to a massive size, spreading its black filaments throughout the forest destroying everything in its path. It now covers a massive area of 2,200 acres (880 hectares) of the Malheur National Forest, in eastern Oregon. The giant mushroom has an outline that stretches 5.6 kilometres (3.5 miles) across and penetrates the earth for 1 metre (3 feet). To put it into perspective, the biggest living thing covers an area the size of 1665 football fields.