What are the causes and effects of marine pollution?

By: Alexander BroholmUpdated: February 02, 2021


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    May 19, 2022
The non-point sources like wind-blown debris, agricultural runoff, and dust become the major source of pollution. Apart from these, factors like land runoff, direct discharge, atmospheric pollution, pollution caused by ships, and deep sea mining of natural resources contribute heavily.

Similarly, what pollutes the ocean the most?

The top 10 Items that are polluting our oceans
  • Beverage bottles.
  • Plastic Bags.
  • Caps / Lids.
  • Cups, plates, forks, knives, spoons.
  • Straws / stirrers.
  • Glass beverage bottles.
  • Beverage cans. 339,875 beverage cans (made of metal) were found to be lining the ocean floors, leading to further pollution.
  • Paper bags. Last on our list of waste in the ocean, is paper bags.

One may also ask, what are three types of marine pollution?

Agricultural runoff and wind blown debris are prime examples.
  • Direct discharge.
  • Land runoff.
  • Ship pollution.
  • Atmospheric pollution.
  • Deep sea mining.
  • Acidification.
  • Eutrophication.
  • Plastic debris.

What are the 4 sources of marine pollution?

The marine environment becomes polluted and contaminated through various sources and forms. Major sources of marine pollution are the inflow of chemicals, solid waste, discharge of radioactive elements, industrial and agricultural effluents, man-made sedimentation, oil spills, and many such factors.

What are four causes of marine pollution?

Various Causes of Ocean Pollution
  • Sewage. Pollution can enter the ocean directly.
  • Toxic Chemicals From Industries. Industrial and agricultural waste is another most common form of wastes that are directly discharged into the oceans, resulting in ocean pollution.
  • Land Runoff.
  • Large Scale Oil Spills.
  • Ocean Mining.
  • Littering.


What are the effects of marine pollution?

Other specific effects of ocean pollution on sea life include:
  • Oil covering the feathers of birds and the gills of fish.
  • Skin and eye irritation, and lung and liver problems, from oil deposits and byproducts.
  • Reproductive system failure from exposure to poisonous industrial and agricultural chemicals.

What are the types of marine pollution?

How Do We Pollute? 9 Types of Ocean Pollution
  • Garbage. Garbage and plastic debris (bags, straws, cutlery, six-pack rings, water bottles, etc.) is a huge threat to the survival of marine fauna.
  • Sunscreen and Other Topicals.
  • Oil Seepage.
  • Sewage.
  • Agricultural and Aquaculture Runoff.
  • Industrial Waste.
  • Carbon Dioxide.
  • Noise.

Who is affected by marine pollution?

Plastic kills fish, birds, marine mammals and sea turtles, destroys habitats and even affects animals' mating rituals, which can have devastating consequences and can wipe out entire species. Learn more about ocean pollution and how it affects marine life and humanity with the infographic below.

How can marine pollution be prevented?

The best way to do this is by a) refusing any single-use plastics that you do not need (e.g. straws, plastic bags, takeout utensils, takeout containers), and b) purchasing, and carrying with you, reusable versions of those products, including reusable grocery bags, produce bags, bottles, utensils, coffee cups, and dry

How does marine pollution affect humans?

Pollution does not only affect marine life and their environment, it also affects mankind. Chemicals such as oil, mercury, lead, pesticides, and other heavy metals can all be found within the ocean and can contaminate water supplies and our food chain by affecting the marine life involved.

How can we stop marine pollution?

10 Solutions To Reduce Ocean Pollution Today
  1. 1- Use a reusable bottle.
  2. 2 – Refuse disposable utensils : Straws, cutlery, tumblers and plastic bags…
  3. 3 – Recycle Properly.
  4. 4 – Picking up trash on the beach.
  5. 5 – Reduce energy use.
  6. 6 – Use less fertilizer.
  7. 7 – Avoid Products Containing Microbeads.
  8. 8 – Buy ocean-friendly products.

What are the main causes of pollution?

Some of the main causes of pollution include industrial emissions, poor disposal of wastes, mining, deforestation, use of fossil fuels and agricultural activities. Pollution can affect the air, the land and water bodies throughout the world. Both industries and individual human beings contribute to this cause.

What causes beach pollution?

Pollution can result from end-of-pipe discharges, litter, or sources within the coastal watersheds that drain to the beach.

  • Combined Sewer Overflows (CSOs)
  • Sanitary Sewer Overflows (SSOs)
  • Stormwater.
  • Trash and Litter.
  • Fertilizers.
  • Pesticides.
  • Animal Feeding Operations (AFOs)
  • Boat Discharges.

What will happen if we don't fix ocean pollution?

Lack of ocean protection will not only accelerate climate change—it could impact our resilience to its impacts. Coral reefs, for example, provide coastal communities with important protection from storm surges. But they have already been pushed toward extinction by climate change, pollution and overfishing.

What ocean is the dirtiest?

North Pacific Ocean

What is the cleanest ocean?

South Atlantic Ocean

What is the most dangerous plastic in the ocean?

1. Plastic Shopping Bags
  • Plastic bags (lightweight and heavyweight) are one of the most lethal plastic killers of ocean animals.
  • Small animals, seabirds and even turtles get entangled in them and drown.
  • Plastic cutlery is one of the most deadly plastics for sea turtles, birds and marine animals.

What are the 4 major threats to ocean life?

The Five Biggest Threats to Our Oceans
  1. Overfishing. We have methodically depleted the fish in our oceans.
  2. Coastal pollution.
  3. Habitat destruction.
  4. Warming.
  5. Acidification.

What pollutes the world the most?

World's Top 10 Toxic Pollution Problems
  1. Lead-Acid Battery Recycling.
  2. Mercury and Lead Pollution from Mining.
  3. Coal Mining (Sulphur Dioxide and Mercury Pollution)
  4. Artisanal Gold Mining (Mercury Pollution)
  5. Lead Smelting.
  6. Pesticides Pollution from Agriculture and Storage.
  7. Arsenic in Ground Water.
  8. Industrial Waste Water.

What country pollutes the most?

Top 5 most polluting countries
  1. China (30%) The world's most populated country has an enormous export market, which has seen its industry grow to become a serious danger to the planet.
  2. United States (15%) The world's biggest industrial and commercial power.
  3. India (7%)
  4. Russia (5%)
  5. Japan (4%)

What is the biggest cause of plastic in the ocean?

The main sources of marine plastic are land-based, from urban and storm runoff, sewer overflows, beach visitors, inadequate waste disposal and management, industrial activities, construction and illegal dumping. Ocean-based plastic originates mainly from the fishing industry, nautical activities and aquaculture.