There are three families of fin whales in the world, including right whale family, gray whale family and fin whale family, about 6 genera 1 1 species. There are 8 families, about 34 genera and 72 species of toothed whales in the world, including puffer fish, ray family, swordfish, narwhalidae, dolphin family, dolphin family and hairtail family.
Extended data
Due to the deterioration of the environment and the mass killing of human beings, whales, especially some large members, are widely killed because of their high economic value, and many whales are on the verge of extinction.
The International Whaling Commission (IWC) is an international organization responsible for whaling and cetacean protection. After commercial whaling led to a sharp decline in whale population, the International Whaling Commission decided to take action to protect whales. Among them, the Convention against Whaling came into effect in 1986, and the Indian Ocean Whale Sanctuary and the Southern Ocean Whale Sanctuary were established in 1979 and 1994 respectively. However, since 1986, some countries, such as Japan and Norway, have taken advantage of the loopholes in the resolution of the International Whaling Commission to kill at least 25,000 whales or dolphins every year under the banner of "scientific whaling".
Other countries that kill whales are Norway, Iceland and Japan, as well as some indigenous tribes in Siberia, Alaska and northern Canada.