The blue whale is the largest animal on the earth at present. An adult blue whale can grow to more than twice the weight of the largest dinosaur, the brachiosaurus, and about 30 times the weight of the African male elephant. The blue whale is a true sea monster, with an average body length of about 26 meters, a record of 33.5 meters and an average weight of 150 tons. Such a behemoth needs a lot of food. An adult blue whale consumes about 1 10,000 calories a day, which is equivalent to 1 ton krill, which is its staple food. The blue whale swam to the shallows and swallowed a mouthful of water and krill. Krill is filtered out by the tongue acting as a piston, forcing water to flow out through the baleen hanging on both sides of the upper jaw, like a big sieve. The tongue of a blue whale is more than 3 meters thick and weighs more than an elephant.

Blue whales are mammals that breathe with their lungs, so they need to come out to breathe every 10- 15 minutes. When the blue whale comes out of the water, the carbon dioxide in the lungs is first discharged from the nostrils and then inhaled. The hot and powerful carbon dioxide exhaust gas discharged from the nostrils, accompanied by loud screams, also swept the nearby seawater out of the water surface, with a height of about 10 meter, so a spectacular white fog column appeared on the sea surface.

Blue whales roam the oceans of the world. According to statistics, there are 250,000 such beasts in the Southern Ocean alone. But in recent years, the relentless whaling industry has made the number of blue whales less and less, less than 1% of the total. It is difficult to determine the number of blue whales. At present, it is estimated that there are hundreds to1.65,438+0,000 in Antarctica. Whether this figure is correct or not, it has reached the lower limit of danger compared with the previous figure. Although whaling has been restricted in the last 50 years and 1967 has been banned, some people continue to kill blue whales commercially under the guise of scientific research.

Blue whales will migrate long distances. In summer, they live in polar waters and feed on a large number of krill near the edge of ice floes. , especially addicted to krill. It is a great trend for blue whales to open their huge mouths when eating, allowing seawater and zooplankton to flood in together. Then, once its mouth is closed, seawater is discharged from its tentacles, and the filtered animal can be swallowed. When winter comes, they will migrate to warm equatorial waters for thousands of kilometers. It is reported that a blue whale can swim more than 3,000 kilometers in just 47 days. Such a long journey kept them away from the feeding base and did not eat for four months. Live on stored energy.

Blue whales enough to visit the world's oceans alone or in pairs can live to 120 years old. Although they live alone, they have advanced ultra-long-distance communication methods, which can emit low-frequency and high-intensity sounds. The recorded audio frequency is 1.80 dB, which is the maximum noise generated by sports, exceeding the noise generated by a jet plane. The sound can last for 30 seconds and can be heard by other blue whales 16 10 km away.

The blue whale is also a unique strongman in the animal kingdom. A blue whale can generate1250kw of electricity at a speed of 28km/h, which is equivalent to the pulling force of a medium-sized locomotive. Once, a blue whale towed a 27-meter-long whaling speedboat for eight and a half hours, with an average speed of 9 kilometers per hour. At that time, the speedboat was retreating at full speed, but it was still pulled forward for 74 kilometers.