The Antarctic blue whale(Balaenoptera musculus ss. Intermedia) is the biggest animal on the planet, weighing up t 400,000 pounds(approximately 33 elephants) and reaching up to 98 feet in length. The whale has a heart the size of a small car, and during the main feeding season, it consumes around 7936 pounds of krill per day. It is the loudest animal on Earth, even louder than a jet engine.