What is the bigist animal ever?

The blue whale (Balaenoptera musculus) is widely regarded as the largest animal that ever lived. These majestic marine mammals can reach lengths of up to 108 feet (33 meters) and weigh over 400,000 pounds (181,437 kilograms). As filter feeders, blue whales consume massive amounts of krill and other small organisms to sustain their enormous bodies. Their impressive size is an adaptation to the vast oceans they inhabit, enabling them to efficiently navigate their environment and find sufficient food resources.