The blue whale is the largest creature found in the ocean at present, and it is also the largest living animal on the earth, with a length of more than 33 meters and some weighing more than 200 tons. Such a heavy body can only live in the ocean. If you live on land, the ground will collapse. Adult blue whales are generally 20~35 meters long and weigh up to 150~ 180 tons, which is equivalent to 25 African elephants or the total weight of 3,000 people.
An adult blue whale has a tongue weighing 2000 kilograms, a skull weighing 3000 kilograms, and a liver weighing 1000 kilograms. The weight of blood in the body is about 8000 kilograms, and the length of intestines in its digestive tract can reach 300 meters. It is really worthy of the name that the heart of the blue whale is called the big heart.
Body characteristics of blue whales
The female is bigger than the male, and the southern blue whale is bigger than the northern blue whale. From above, the kiss is wide and flat. The dorsal fin is small, about 0.4m high, and it is1/4 behind the body. The flippers are small, accounting for 15% of the body length. The caudal fin is1/3 to1/4 of the body length, and the trailing edge is straight. There are 55 ~ 88 stinging gullies, the longest reaching the umbilicus. 270 ~ 395 whiskers on each side. The back of the body is dark gray-blue, the ventral surface is slightly light, and the mouth and beard are black.
Blue whales are different from other kinds of whales, which are short and stocky, while blue whales have a long vertebral body and look like they are elongated. The head is flat and U-shaped, and there are obvious ridges from the upper lip to the stomata on the back. There are dense baleen plates at the front end of the mouth, and about 300 baleen plates (about 1 m long) hang from the upper jaw and penetrate into the mouth for about half a meter. 60-90 grooves (called belly folds) are parallel to the body along the throat. These folds are used to discharge seawater after swallowing in large quantities.
Refer to Baidu Encyclopedia-Blue Whale for the above content.