Why oil dumping into the ocean is harmful

In a word, the dumping of oil into the ocean exacerbates the eutrophication of seawater, leading to undesirable phenomena such as red tides.

Specific explanation: With the rapid development of modern chemical and agricultural production and the increase of population in coastal areas, a large number of industrial and agricultural wastewater and domestic sewage are discharged into the ocean, and a considerable part of them are directly discharged into the ocean without treatment, resulting in the increasingly serious eutrophication of offshore and harbors.

At the same time, due to the increase in the degree of coastal development and the expansion of marine aquaculture, it has also brought about the pollution of the marine ecological environment and the aquaculture industry itself. The development of the maritime industry has led to the introduction of exotic harmful red tide species; Changes in the global climate have also led to the frequent occurrence of red tides.

After the occurrence of red tide, in addition to the red color of the seawater, a large number of red tide organisms gather in the gills of fish, causing fish to suffocate and die due to lack of oxygen;

Second, after the death of red tide organisms, the algae consume a large amount of dissolved oxygen in the water during the decomposition process, resulting in the death of fish and other marine organisms due to lack of oxygen, and at the same time, a large number of harmful gases and toxins will be released, which will seriously pollute the marine environment and cause serious damage to the normal ecosystem of the ocean;

The third is that fish swallow a large amount of toxic algae.

At present, red tide has become a worldwide public nuisance, and it occurs frequently in more than 30 countries and regions, including the United States, Japan, China, Canada, France, Sweden, Norway, the Philippines, India, Indonesia, Malaysia, and South Korea.

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Of the dangers of oil to the oceans, eutrophication is almost non-existent.

The hazards of oil to the oceans are mainly in the following categories:

1.Physical hazards, oil density is small, floating on the surface of the water, one is to block the light, the other is easy to float on the surface of marine organisms, causing poison to marine organisms.

2.Chemical hazards Oil is ingested by marine organisms, causing serious poisoning to internal organs, and the toxic organic matter released by oil in the process of degradation and volatilization is also terrible.

3.Biological hazards Oil is extremely toxic to marine animals and plants, and can easily cause the death of a large number of marine organisms, which will eventually lead to the decline of biodiversity in polluted sea areas.

Because oil is organic and very difficult to decompose into inorganic matter, marine plants and bacteria cannot absorb the chemical elements in it and do not cause red tides.

Oil is lighter than water and will float on the surface of the water, blocking sunlight and irradiation, affecting the photosynthesis of plants on the seabed.

As an energy source, oil can be said to play an extremely important role in people's life and production, especially in industrial production, it has an irreplaceable role in other resources. So how exactly is oil formed?

Scientists have found that in the shallow sea area of the Mesozoic and Cenozoic era, the sunlight is very strong, and the sufficient sunlight provides favorable conditions for life activities, and because the shallow sea area is rich in liquid water, oxygen, carbon dioxide, nitrogen, phosphorus, potassium and other nutrients necessary for biological growth, it has become an ideal place for marine life to gather and reproduce.

As a result, countless marine creatures flock here to live. When they die, their bodies almost sink to the bottom of the sea. In addition, the river water flowing from the land also brings a large number of corpses of freshwater creatures, which have been deposited here for many years.

Over time, the remains of organisms deposited at the bottom of the ocean are gradually transformed into oil under the action of biochemistry, thermal catalysis, thermal cracking, and high-temperature metamorphism.

As a result, formations in the Mesozoic or Cenozoic are often rich in oil.

The main hazards caused by marine oil pollution include the following aspects: First, oil spills will cause serious damage to marine ecosystems, directly affect the survival and reproduction of marine organisms, and destroy important ecological environments such as coral reefs, seagrass beds and fish habitats. Second, oil can cause toxic effects on marine life, causing poisoning or death of organisms such as fish, marine mammals and birds, and causing serious damage to the entire food chain and ecological balance.

In addition, oil pollution can have a significant impact on economic activities in coastal areas, such as fisheries, tourism and the livelihoods of coastal communities. Finally, marine oil pollution can also be harmful to human health, entering the human body through food chains such as fish and shellfish, causing a variety of health problems, including respiratory diseases and cancer. Therefore, it is necessary to strengthen measures to protect the marine environment, reduce the occurrence of oil pollution, and actively develop clean energy to replace oil.

Marine oil pollution. The vast majority of marine oil pollution comes from human activities, including ship transportation, offshore oil and gas exploitation, and coastal industrial pollution, due to the uneven distribution of oil production and consumption, therefore, more than half of the world's annual oil production is transported by oil tankers at sea, which brings the threat of oil pollution to the ocean that accounts for 71 of the earth's surface, especially the sudden oil pollution such as oil tanker collision and offshore oil field leakage, which has caused immeasurable losses to human beings. As many as hundreds of thousands of tons of oil spill, once into the ocean will form a large oil film, this oil film will isolate the atmosphere from the seawater, weaken the wind and waves on the sea surface, prevent the oxygen in the air from dissolving into the seawater, so that the oxygen in the water is reduced, and at the same time, a considerable part of the ** will be digested and decomposed into inorganic matter by marine microorganisms, or oxidized and decomposed by the oxygen in the seawater, so that the oxygen in the seawater is consumed in large quantities, making it difficult for fish and other organisms to survive.

Consequences of an oil spill from the sea:

1. Polluted water quality, a small oil spill can seriously affect the survival of marine life. The oil spill covered the surface of the sea, preventing seabirds and many marine creatures from starving to death.

2. It may affect the tourism industry.

3. When it occurs near the shore or near the fishing ground, it is easy to cause secondary pollution during treatment.