Dolphins belong to the Mammals, the cetaceans, the larvae, the dolphins, and the dolphins. There are nearly 62 species, distributed in the world's oceans. The body length is 1.2 to 4.2 meters and the bodyweight is 23 to 225 kilograms. Dolphins generally have a pointed tip.
Each of the upper and lower jaws has about 100 sharp teeth, which are mainly eaten by small fish, squid, shrimp, and crab. Dolphins like to live in "collective" life, ranging from a few to a few hundred. Dolphins are a superb, intelligent sea mammal. After training, you can play table tennis, fire hoop and so on. In addition to humans, the brain of the dolphins is the most developed of the animals. The human brain accounts for 2.1% of the body's weight, and the dolphin's brain accounts for 1.7 percent of its weight.
The dolphins' brain is made up of two completely separated parts. When one part is working, the other part is fully rested, so it can stay asleep for life. Dolphins rely on echolocation to determine the distance, direction, position, shape, and even the nature of the object. Some people experimented with the dolphins' eyes and stirred the water.
They also quickly and accurately chased the food thrown at it. Dolphins not only have amazing hearing but also superb swimming and exotic diving skills. According to some tests, the diving record of the dolphins is 300 meters deep, and people can only dive 20 meters without wearing wet suits.
As for its swimming speed, it is even more difficult for human beings. The speed of the dolphins can reach 40 kilometers per hour, which is equivalent to the medium speed of the torpedo speedboat.
In the whale kingdom, there are a number of dolphins, the most dolphins, and more than 30 species are known throughout the world. Some species, called "whales", such as killer whales and pseudo-killer whales, are actually members of the dolphins' family.
Dolphins are a kind of intellectually developed and very intelligent animals. They don't like people who are timid in the forest, they don't like people in the forest. They don't like people in the mountains and forests. They often show their temperament. Pro-likeness is close to people, and they are sometimes even more friendly to humans than dogs and Malays.
The story of the dolphins who saved the water, we have heard a lot, the reports of dolphins playing and playing with people are often heard, and some stories have even become sensational news. Dolphins who have been trained to learn can even imitate the voices of some people. In the 1970s, three scientists in the United States learned two words from two dolphins.
Recently, four scientists, Dr. Owens of the Pacific Ocean Foundation, trained two dolphins and spent three years teaching them 700 English words. However, some scientists believe that the "language" or "dialect" of animals cannot be depicted as too bizarre.
But dolphins do have different intelligence. Its brain size and quality are among the best in the animal kingdom. At present, scientists have two different insights into the intelligence of animals: one thinks that chimpanzees are the most evolved and most capable of all animals; the other things that the intelligence and learning the ability of dolphins are similar to or even higher. Therefore, some people call the dolphins "the wisdom of the sea."
To confirm that the dolphins have the ability to learn, as early as 1959, a man named Lily had tested a dolphin. He inserts the electrodes into the pleasure center and the pain center of the dolphins. When the current stimulates the central nervous system or the painful central nervous system of the dolphins through the electrodes, it will produce pleasure or pain.
Then train the dolphin to touch the metal piece on its head to control the on and off of the current. If the electrode is inserted in the painful center of the dolphins, the dolphins will choose to cut off the metal piece of the power supply as long as they train 20 times, so that the pain disappears. For a monkey, it takes hundreds of training to learn to control the switch. This shows that in some ways dolphins have a stronger ability to learn.
Dolphins are friends of human beings, and they are very happy to be close to people. The dolphins at Monkey Beach in Australia have established friendships with humans and brought great joy and surprise to people. Maybe there are more dolphins in the future, and connecting with humans in more places. This desire is not an illusion: as people study dolphins deeper, we will reveal more secrets about dolphins, then we It is easier, more intimate and more friendly to interact with dolphins!
When it comes to dolphins, people have heard that it has extraordinary wisdom and ability. In the aquarium, the dolphins can perform all kinds of wonderful jumping movements according to the instructions of the trainer. It seems that they can understand the information transmitted by human beings and take action. People can't help but marvel that this beautiful sea animal is so smart. So, to what extent is the wisdom and ability of the dolphins? Is there a growing possibility for their mutual communication with humans? Here we start with the structure and ecological characteristics of the dolphin brain and discuss its wisdom.
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