What is the biggest animal that not extinct?

The biggest animal that is not extinct is the blue whale. The blue whale (Balaenoptera musculus) is a species of baleen whale. It is the largest living creature ever recorded. The blue whale is found in oceans around the world. It is typically found in deep, cold waters. Blue whales can reach a length of up to 33 meters (109 feet) and a weight of up to 199,000 kilograms (220 tons).