What is the value of whales to human beings?

Whales are all treasures and have important economic value. Its huge body provides people with a large number of products such as whale meat and whale oil. The value of a blue whale of about100t is 10000 USD. Whale meat accounts for about 1/2 of whale weight. In addition to grinding into coarse powder as feed or fertilizer field, it can also be processed for human consumption. It is rich in protein and has high nutritional value. Similar food stores in Norway and Japan serve fresh whale meat and canned whale meat. Japanese food researchers believe that whale meat tastes better than beef and is one of the most delicious foods in the world. Japan also uses whale meat as raw material and processes it into man-made fibers.

Whale fat is a kind of animal oil rich in fat. It not only contains a lot of glycerol, but also can be used for processing nitroglycerin and cigarettes in synthetic explosives, making soap and refining high-grade lubricating oil. The fatty acid content in whale fat is below 2% at the lowest and about 30% at the highest. The lighter the blubber, the higher the quality. A blue whale weighing 120 tons can get more than 40 tons of oil. This amount of oil is equivalent to lard taken from thousands of fat pigs. After hydrotreating, whale fat can be made into tasteless blocks or edible margarine.

Whale fat has many other uses. It can make candles and oil paints. It is also used in steelmaking and tanning industries. Because the viscosity of whale oil remains unchanged at high temperature, it is used as lubricating oil for some precision instruments. For example, sperm whale oil can be used to extract industrial oil and whale wax oil. Whale wax oil is taken from the head of sperm whales. It has a high melting point and can be used to make cosmetics and candles.

Long Xianxiang has been used as a high-grade perfume since ancient times. The source of this high-grade spice has been kept secret. In fact, it's just waste accumulated in the stomach of sperm whales after indigestion. Long Xianxiang was originally a waxy substance, and its appearance was grayish yellow, dark gray or brownish. It comes out of the body first. It smells strange and unpleasant. After drying, it is amber, ignited by fire, and the flame is blue, fragrant and fragrant, with a musk-like taste. This natural perfume varies in size and shape, ranging from tens of grams to 400 kilograms. Because of its wide use and peculiar smell, it is called "floating gold". Its specific gravity is only 0? 9. The melting point is about 60℃, and it can be dissolved in alcohol. Long Xianxiang used to be a high-grade raw material for making perfumes and stimulants, and later it was widely used for making vanishing cream, lipstick and other popular cosmetics.

In addition, whale skin is soft, with fluffy surface and patterned leather, which is suitable for making clothes or purses. Whale fins can be used as umbrellas, bras, bow ties and cigarette cases. Whale ovaries are also the raw material of progesterone, a special drug called progesterone. Whale dung and bone meal are fertilizers rich in ammonia and phosphorus. Bone glue can also be extracted from whale bones as raw materials for processing photographic films. Whale liver is rich in vitamins A and D, and sperm whale liver often weighs 400 kg, and its vitamin A content is equivalent to 100 ton of high-quality cream or 5 million eggs. Whale whiskers and whale teeth can be processed into medical instruments or handicrafts.

In a word, whales are treasures and have extensive economic value for human beings.