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Why is the ocean of great significance to mankind?
1, the ocean is rich in biological resources.

The ocean is the cradle of life and there are thousands of marine life living in it. They are not only an important part of maintaining the earth's ecosystem, but also provide people with a lot of food.

Seafood is not only delicious, but also rich in high nutritional value. Marine plants such as kelp and laver are rich in iron and iodine, and aquatic products are rich in calcium, especially shrimp skin. Marine fish, oysters and clams are rich in protein.

2. The ocean is still a huge drug warehouse.

Scientists have isolated thousands of active compounds by studying many kinds of marine animals, plants and microorganisms. These compounds have unique chemical structures, which are incomparable to terrestrial organisms.

Many of these compounds have shown special effects in anti-cancer, anti-virus, anti-radiation, anti-aging and anti-cardiovascular diseases. Health products such as seaweed gel and cod liver oil are also extracted from marine life.

3. The ocean is rich in mineral resources. Seawater is rich in metal ions such as sodium, magnesium and potassium, and modern technology has been able to extract them as industrial raw materials. Offshore oil and gas reserves are abundant.

Some data show that the world's offshore oil resources account for 34% of the total global oil resources, of which the proven reserves are about 38 billion tons, and the submarine natural gas resources are immeasurable.

4. There is also a potential treasure house of marine mineral resources, namely ocean polymetallic nodules.

The total reserves exceed 3 trillion tons, and the contents of some main useful metals such as manganese, nickel, copper and cobalt are more than 300 times of the average content in the earth's crust. Seawater also contains lithium, deuterium, tritium and other resources needed for nuclear fusion.

The ocean is also a treasure house of energy.

According to experts' estimation, the global ocean energy is as high as 75 billion kilowatts, including tidal energy, temperature difference energy, salt difference energy, ocean current energy and wave energy. These energy sources are renewable, pollution-free, widely distributed and huge. But at present, only tidal energy development technology is relatively mature.

6. There is still huge space for human development in the ocean.

For example, laying cables on the seabed, building tunnels in the sea, underwater tunnels, underwater navigation, submarine oil pipelines and reasonable dumping sites in the ocean. With the rapid increase of global population, there is less and less land space. We can build artificial islands to alleviate the population pressure.

Extended data

However, with the development of marine resources, the problems of marine pollution and marine ecological destruction are becoming increasingly serious.

Since mankind began to develop offshore oil, oil spills have occurred from time to time, which directly led to a lot of seawater pollution and seriously affected the living environment of marine life.

In addition, due to the uncontrolled fishing of marine life, the fishery resources in the offshore waters have become increasingly scarce, and many aquatic organisms are on the verge of extinction, and the marine ecology is facing great threats.

Therefore, while studying and developing marine resources, we should also protect marine ecology and environment, ensure the sustainable utilization of marine resources, protect this huge treasure house, and truly realize the harmony between mankind and the ocean.

Baidu encyclopedia-ocean