The difference between whales and dolphins

70% of the earth is the ocean. There are many animals in the ocean world. Whales and dolphins are two kinds of marine animal names that we are familiar with in our daily life. What's the difference between them?

I. the difference between whales and dolphins

The cetacean is the general name of the cetacean, while the dolphin is the general name of the animals of the suborder Dolphinae. Dolphins belong to a family of whales. The difference between dolphins and other cetaceans is that they have a unique way of swimming-dolphin swimming.

II. Classification of whales

Cetaceans: characterized by toothless and filtered seawater prey by a large number of horned whales in their mouths; cetaceans: characterized by teeth. Further divided, it can be divided into 14 families and nearly 90 species. After a long period of evolution. There is a big gap between them in terms of body size, living habits and so on.

The blue whale is considered to be the largest known animal on Earth, measuring up to 33 meters long and weighing 181 tons. The smallest puffer fish is only one meter long and weighs only 30 kilograms.

Cetaceans are completely aquatic mammals, ranging from 1 to 30 meters long, with bare skin, little hair on the snout and thick fat under the skin. These fats help maintain body temperature, and when they live in water, they reduce body weight and are good for swimming.

Now, due to the uncivilized activities of human beings, the survival of marine animals is becoming more and more difficult. I hope everyone can start to protect them and achieve harmony between man and nature.