35 Surprising Facts About Ocean Pollution That Might Scare You

The ocean remains one of the most expansive, mysterious and diverse places on Earth. In fact, it’s one of the best gifts Mother Nature has gifted to man.

Unfortunately, it is being threatened by pollution from people on land and natural causes, causing marine life to die and putting the oceanic ecosystem in its entirety at threat. 

That means if any effort were to be taken to preserve the ocean and its natural beauty, among the areas where drastic measures would most be needed is in combating this pollution.

Before, it was assumed that because the ocean was so big, vast and deep, the effects of dumping trash and litter into the sea would only have minimal consequences. In fact, oceans were widely used as the ultimate disposal area for waste.

But as we have seen, the impact this pollution is causing has proven to be more than insignificant. While all five oceans have suffered as a result of human consequences for over millennia now, pollution has accelerated in the past few decades.

Oil spills, toxic wastes, floating plastic and various other factors have all contributed to the pollution of the ocean.

Wikipedia defines ocean pollution as,

Marine pollution occurs when harmful, or potentially harmful, effects result from the entry into the ocean of chemicals, particles, industrial, agricultural and residential waste, noise, or the spread of invasive organisms. Most sources of marine pollution are land-based. The pollution often comes from nonpoint sources such as agricultural runoff, wind-blown debris and dust.

Water and air, the two essential fluids on which all life depends, have become global garbage cans.

~ Jacques Cousteau

“Did you know that approximately 1.4 billion pounds of trash per year enter the ocean?” Source: NOAA

35 Surprising Facts About Ocean Pollution

35 Surprising Facts About Ocean Pollution

Simply put, the ocean cannot continue to thrive as a dumpsite for people.  While the state of the ocean’s pollution may not come as any sort of surprise to many people, the following cold hard facts might:

Fact 1: Plastic is the most common element that is found in the ocean. And yes, as we all know, this material is harmful to the environment as it does not break down easily and is often mistaken for food by marine animals.

Fact 2: At least 8 million tons of plastic enter the oceans each year. Just to bring that into perspective, it would take emptying a garbage truck of plastic into an ocean every minute to achieve that amount of waste in a year!

Fact 3:  Plastic pollution is one of the most serious threats to the ocean. Plastic does not degrade; instead, it breaks down into progressively smaller pieces, known as microplastic (smaller than 5 mm) by sun exposure and wave action. Then it can find its way into the food chain but never disappears.

Plastic debris can absorb toxic chemicals from ocean pollution, therefore poisoning whatever eats it. It poses a significant health threat to the various sea creatures and the entire marine ecosystem.

Fact 4: There is more microplastic in the ocean than there are stars in the Milky Way.

Fact 5: Over 100,000 marine animals die every year from plastic entanglement and ingestion. And yes, according to statistics, more than 50 percent of all sea turtles have consumed plastic.

Fact 6: There’s so much junk at sea that the debris has formed giant garbage patches. The term “garbage patch” is a large area actually made up of debris ranging in size, from microplastics to large bundles of derelict fishing gear and other marine debris collects.

These patches are formed by large, rotating ocean currents called gyres that pull debris into one location, often to the gyre’s center. The debris forming garbage patches can be found from the surface of the ocean all the way to the ocean floor.

Fact 7: There are five gyres in the ocean, one in the Indian Ocean, two in the Atlantic Ocean, and two in the Pacific Ocean. The largest is the Great Pacific Garbage Patch.

Fact 8: There is an island of garbage twice the size of Texas inside the Pacific Ocean: the North Pacific Gyre off the coast of California includes an estimated 1.8 trillion pieces of trash. There, the number of floating plastic pieces outnumbers total marine life by six to one in the immediate vicinity.

Fact 9: In fact, plastic is the number one source of pollution in the ocean. When plastic eventually degrades, which is around 400 years for most types, the process releases chemicals that further contaminate the sea.

Fact 10: Plastic found in the ocean comes from China and Indonesia more than anywhere else in the world, and they account for one-third of plastic pollution. In fact, 80% of plastic pollution comes from just 20 countries, including the United States.

Fact 11: The biggest source of pollution in the ocean is directly from land-based sources, such as oil, dirt, septic tanks, farms, ranches, motor vehicles, among larger sources. Thousands of tons of waste and trash are dumped into the ocean on a daily basis.

Fact 12: Ocean pollution is killing millions of sea life each year. Over one million seabirds are killed by ocean pollution each year. Three hundred thousand dolphins and porpoises die each year as a result of becoming entangled in discarded fishing nets, among other items. One hundred thousand sea mammals are killed in the ocean by pollution each year.

Trash in the beach

Fact 13: Even though most of the trash and waste dumped into the ocean is released hundreds of miles away from land, it still washes up on beaches and coastal areas and affects everything in between. Every marine animal is affected by man-made chemicals released in the water.

Fact 14: Oil is the fastest source of deterioration to the ocean, being far more harmful than trash and waste. However, only a small percentage of oil (around 12%) dumped in the ocean comes as a result of actual oil spills. Most oil causing harm in the ocean is a result of drainage from the land. 

Fact 15: Oil spills suffocate marine life to death and lead to behavioral changes and a breakdown in thermal insulation for those that do survive. It essentially changes the entire ecosystem of an affected area, such as a long coastline or deep ocean.

Fact 16: Toxic metals can destroy biochemistry, behavior, reproduction, and growth in marine life.

Fact 17: Microfibers also cause much pollution. In fact, with each load of laundry, more than 700,000 synthetic microfibers are washed into our waterways. Unlike natural materials such as cotton or wool, these synthetic microfibers make up as much as 85 percent of all beach trash that does not break down.

Photo by: DepositPhotos

Fact 18: Not all sources of contamination in the ocean come from just oil, trash and solid wastes. The dumping of radioactive waste from nuclear reactors, industrial race (such as heavy metals and acids), and drained sewage are also heavy contributors to pollution.

Fact 19: Littering causes pollution in the ocean, which also causes a substantial loss of life beneath the seas. The truth is that billions of tons of litter end up in the ocean each year, and it is substantially more than the 250 million tons of trash generated. This has led to a gradual loss in marine life and an increase in the number of endangered species

Fact 20: There is also much noise in the ocean, and it’s harmful to sea life. Noise pollution created by shipping and military activity can cause cellular damage to a class of invertebrates that includes jellyfish and anemones. These animals are a major food source for tuna, sharks, sea turtles and other creatures.​​​​​​

Fact 21: Sewage leads to the decomposition of organic matter that, in turn, leads to a change in biodiversity. Even if the ocean’s ecosystem isn’t destroyed entirely, it is still changed drastically, and often not for the better.

Fact 22: Fertilizer runoff creates eutrophication that flourishes algal bloom in aquatic systems. Harmful algal blooms (HABs), also known as “red tides,” grow rapidly and produce toxic effects that can affect marine life and sometimes even humans, which depletes the oxygen content in the water that affects marine life.

Fact 23: In several parts of the world, including the Gulf of Mexico and the Baltic Sea, Eutrophication has created enormous dead zones that can result in mass die-offs of fish and other marine life, making those zones impossible for marine or plant life.

Fact 24: The dead zones are growing in number. In 2004, scientists counted 146 hypoxia or dead zones, areas of such low oxygen concentration that animal life suffocates and dies, in the world’s oceans.

By 2008, that number had increased to 405. In 2017, in the Gulf of Mexico, oceanographers detected the largest dead zone ever measured, nearly the size of New Jersey.

Fact 25: Small animals at the bottom of the food chain absorb the chemicals as part of their food. These small animals are then eaten by larger animals, which again increases the concentration of chemicals. Animals at the top of the hierarchy of the food chain have contamination levels millions of times higher than the water in which they live.

Fact 26: People get contaminated easily by eating contaminated seafood that can cause serious health problems, from cancer to damage to the immune system.

Ocean pollution is more common in waters more than 2,000 feet deep

Fact 27: Ocean pollution is more common in waters more than 2,000 feet deep, with the most common being plastic bags, metal cans, fishing equipment, glass bottles, shoes, tires, etc.

Fact 28: Garbage like plastic bottles, aluminum cans, shoes, and packaging material – if not disposed of correctly, can reach the sea, and the same garbage can again reach the seashore, where it pollutes beaches and affects the local tourism industry.

Fact 29: The salty water of the ocean can move pollutants from the ocean to coastal freshwater, making wells and groundwater contaminated.

Fact 30: Chemicals from industries and mines can also enter the ocean through land-based activities. They can seep through soil, water or land either during their manufacture, use or accidental leaks. From soil, water or land, they can enter into ocean currents and can travel longer distances.

Fact 31: As 70% of the earth is covered with water, people actually assumed that all pollutants would be diluted and disappear. But in reality, they have not disappeared, and their effects can be easily seen as they have entered the food chain.

Fact 32: Until the 1970s, chemicals and garbage were deliberately dumped into the oceans and became common practice for disposing of everything, including pesticides and radioactive waste, assuming that it would get dissolved to safe levels.

Fact 33: Till today, in many parts of the world, sewage water is discharged into the ocean – untreated or under-treated. This can have a serious effect on marine and human life and can also lead to eutrophication.

Fact 34: We cannot see ocean pollution because most ocean trash sits on the bottom, and it may be worse. Actually, almost 70 percent of ocean garbage actually sinks to the seafloor for which we’re unlikely ever to be able to clean it up.

Fact 35: One effect of greenhouse emissions is increased ocean acidification, which makes the oceans lose mussel mass. It is becoming more difficult for bivalves such as mussels, clams and oysters to form shells, decreasing their likelihood of survival, upsetting the food chain and affecting the shellfish industry of multibillion-dollar.




National Geographic

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About Rinkesh

A true environmentalist by heart ❤️. Founded Conserve Energy Future with the sole motto of providing helpful information related to our rapidly depleting environment. Unless you strongly believe in Elon Musk‘s idea of making Mars as another habitable planet, do remember that there really is no 'Planet B' in this whole universe.