A blue whale blows (exhales, spouts) as it rests at the surface between dives. A blue whales blow can reach 30 feet in the air and can be heard for miles. The blue whale is the largest animal on earth, reaching 80 feet in length and weighing as much as 300,000 pounds. North Coronado Island in the background. Coronado Islands (Islas Coronado), Baja California, Mexico