200 words about whales

Hello, I am a blue whale, and I am the biggest animal in the world! Although we cetaceans have the word "fish" in their names, we are real mammals.

Our blue whale is the largest of all known animals since ancient times. It is about 30 meters long and weighs between 150 and 200 tons, which is equivalent to the total weight of more than 25 Asian elephants or more than 300 people. Our blue whale's body surface is light blue or mouse gray, with light fine patterns on the back and white spots on the chest, which is very beautiful. Our big tail is wide and flat, and the whole body is streamlined. It looks like a razor, so it is also called "razor whale".

Although we live in the sea, we breathe with our lungs like other mammals. Our lung weighs 1000 kilograms and can hold 1000 liters of air. It is precisely because of such a large lung capacity that we can greatly reduce the number of breaths, and only breathe once every 10 ~ 15 minutes. When breathing, carbon dioxide and other waste gases in the lungs are discharged from the body through the nostrils, and then fresh air is inhaled.

Because my body is too big, I eat a lot of things every day. My favorite food is shrimp. We can eat more than 2 million krill at a time, and we can eat 4000 ~ 8000 kilograms every day! If the food in our stomachs is less than 2000 kilograms, we will feel hungry. Because krill is widely distributed in the North and South Poles, in order to get enough food, we have lived in the polar regions for generations and rarely in tropical waters.

We are all treasures and have high economic value. Our bodies are rich in oil, and our beards, skins, bones, meat and internal organs can all be used as raw materials for industry, light industry and food processing industry. It is precisely because of this that humans have killed us in large numbers, making our family on the verge of extinction, and many of our companions have lost their lives.

Here, I hope that human friends can live in harmony with us and make our earth home full of vitality.