The world's largest (20th) largest animal in the world ~ blue whale. It is an endangered species, the largest cetacean, and by far the largest mammal in the world. Mainly lives in water temperature 5-

World's Best(20)

The world's largest animal, the blue whale. It is an endangered species, the largest cetacean, and by far the largest mammal in the world. Mainly living in temperate and cold waters with a water temperature of 5-20 °C, mainly feeding on krill and plankton, breeding in winter, female blue whales generally give birth every two years, each litter only one litter. The whole body surface of the blue whale is pale blue or several gray, with pale fine stripes on the back and white spots on the chest, up to 33 meters long and weighing 181 tons. The intestines of blue whales are 500 meters long, can eat five tons of food a day, and can grow 2 meters a year, which is equivalent to seven stories high.