The ocean is closely related to the origin of life, and the evolution of living things is inseparable from the ocean. To this day, human survival and development are inseparable from the ocean.

As a planet, the Earth is insignificant in the vast universe, but its unique feature eclipses most celestial bodies in the universe, that is, it is the only galaxy in the solar system that has a large amount of liquid water. . If you look down at the earth from a space shuttle, you will clearly see that the earth inhabited by humans is a light blue water ball, and the land is just an island in the vast ocean. In this sense, it seems more appropriate to call the earth a water ball or an ocean ball.

The earth’s surface area is 510 million square kilometers, of which the ocean area is 367 million square kilometers, accounting for 70.8% of the entire earth’s surface area; while the land area is 149 million square kilometers, accounting for only 149 million square kilometers of the entire earth’s surface area. 29.2% of the surface area.

The ocean has a huge impact on nature and the progress of human civilization and society. The historical process of the development of human society has always been closely related to the ocean. No one does not believe that human civilization and progress directly benefit from the ocean.

The ocean is the cradle of life, which provides conditions for the birth, evolution and reproduction of life; the ocean is the home of wind and rain, and it plays an important role in controlling and regulating the global climate; the ocean is the protection of resources , it provides people with abundant food and endless resources; the ocean is the main thoroughfare of transportation, and it provides economic and convenient transportation methods for human beings to engage in maritime transportation; the ocean is the base for modern high-tech research and development, and it provides It provides space for people to explore the mysteries of nature and develop high-tech industries.

As humans enter the 21st century, the ocean is a special space on the earth. Whether it is its material resource value or political and economic value, it far exceeds people's original understanding. People's demand for the ocean is no longer just for the benefit of fishermen and the convenience of boating. The rapid development of science and technology has given mankind the conditions to march toward the ocean.

However, no one can deny that the deterioration of the global environment and abnormal economic development in the 20th century have cast the shadow of energy, food and water crises over people's heads. The land is already overwhelmed, and the ocean may be the second living space for human beings.

But don’t forget, we only have one earth, and there is only a handful of sea water on the earth. How important clean and bright sea water is to us humans and to all living things on the earth!

Let us remember what a philosopher once said: The ocean has nurtured us, and we have to thank the ocean. As descendants of the original cradle of life, our smooth skin, the blood in our veins, and the water circulating in our bodies are all owned by the ocean. We are just a part of the ocean.