The blue whale is the largest animal in the history of the world. It is 20-30 meters long and weighs 100-200 tons. The length of the paddle is 3-4 meters.
The use of technological advances to kill blue whales has become a threat to the species. In the 1970s, the former Soviet Union stopped illegal whaling. However, 330,000 whales have been killed in Antarctica, 33,000 in the Southern Hemisphere, 8,200 in the North Pacific, and 7,000 in the North Atlantic, leaving no more than 25,000.
This whale is a nomadic animal that lives throughout the ocean. It lives in the Arctic Ocean in summer, where a very small shrimp is abundant, and in Antarctica in winter. They usually live alone, except during the breeding season and when raising kittens. Blue whales mature at 8-10 years of age and live about 80 years. Adult whales eat an average of about 4 tons of sardines and shrimp per day.
Females are born every 2-3 years. At 11 months of pregnancy, the kitten was 7 meters long and weighed 2,700 kilograms. Having twins is very rare. Breastfeed for 7-8 months. Blue-veined whales pump 380-570 liters a day and gain 90 kg of weight. The breeding season begins in late autumn and lasts until the end of winter.
Blue whales are the loudest animals. The ultra-low waves make a loud croaking sound and communicate with whales 150 kilometers away. It can reach speeds of 50 kilometers per hour, but it usually swims at a speed of 20 kilometers per hour. When feeding, slow down to 5 km hours. The blue whale weighs 2.7 tons on its tongue and 600 kilograms on its heart.
It can also hold 90 tons of water and feed. Dive for 10 minutes during meals and generally dive for 20 minutes in one breath. The longest dive in the study was 36 minutes. The only natural predator of blue whales is killer whales. Researchers estimate that 25 percent of adult whales are scarred by killer whale attacks.