What is the largest animal on Earth?

The largest animal on Earth is the blue whale (Balaenoptera musculus), which can reach lengths of up to 30 meters (98 feet) and weigh as much as 180 metric tons. Despite their massive size, blue whales feed primarily on tiny organisms like krill, which they filter through baleen plates in their mouths. Blue whales are found in oceans worldwide and are known for their incredible migrations, traveling vast distances between feeding and breeding grounds.