Jiman

Pando (Latin for "I spread"), also known as the trembling giant, is a clonal colony of an individual male quaking aspen determined to be a single living organism and assumed to have one massive underground root system. Pando occupies 43.6 hectares and is estimated to weigh collectively 6,000,000 Kg making it the heaviest known organism. The root system is estimated to be several thousand years old, placing it among the oldest known living organisms.