On the blue sea, the freighter "Peace" is braving the wind and waves. However, just a few hundred kilometers ahead, there are countless ferocious reefs hidden under the sea, where many seagoing ships sleep forever at the bottom of the sea. Just then, something with a white belly suddenly jumped to the surface of the water next to the cargo ship, and then it neatly drilled back into the water.
The sailors on the ship grabbed the small fish that had been prepared long ago and threw it high into the air. Suddenly, it jumped out of the water like an arrow. When the fish opened its mouth, it landed firmly in it. Then, it drew a beautiful arc and returned to the water. Who is this first-rate acrobat? It is a dolphin! Its name is "Pique" (as sailors call it), and it swims to the front of the ship as fast as meeting an old friend to "navigate".
Two years ago, sailors rescued it from the fishing net. Since the establishment of the route, it has faithfully undertaken the navigation task of helping ships safely bypass dangerous firewood. Its action aroused people's strong interest and experts began to study dolphins.
Dolphins, like fish, are residents of the ocean.
In the long-term marine life, it formed a spindle-shaped body and became an excellent swimmer. It has a gray-black back and a white belly. Its head is a cone with a very sharp front end, like the head of a rocket. It usually only eats creatures such as fish and shrimp. Most dolphins live in groups.
Investigate its source, or mammals; Like all mammals, dolphins breathing with lungs seem to be human beings, which were first discovered by human sensibility. In the continuous scientific research, it is also found that dolphins can understand human language signals better than any other animal. This discovery has attracted great attention of biologists.
Dolphins live in the ocean. Can we make use of this feature to help people conduct seabed surveys and develop marine resources? I think dolphins can do it. In addition, dolphins, as mammals, live in the ocean, which is probably related to the climate change and crustal changes on the earth tens of millions of years ago.
Therefore, dolphins have certain significance for human beings to study the progress of the earth and biology. The achievements of studying dolphins make people pay more attention to the development of biological science, and the development of bionics is an example. People not only know themselves, but also know all living things and the earth through constant exploration.