How Beach Litter Causes Harm to People

Recognizing the effects of beach litter on individuals emphasizes the vital role played by beach cleanups and marine conservation initiatives.

Boys on Littered Beach Looking at Sea

We like to think of the beach as a place to relax, unwind, and have fun with family and friends. But often when we get there, we find someone else’s trash in the sand. That litter doesn’t just look bad. In addition to harming marine life, it can hurt children and adults in serious ways. From toxic chemicals to physical injuries and long-term environmental damage, beach trash poses real risks to human health and safety.

Toxins from Plastic

Plastic makes up about 85% of all marine debris. During a typical beach cleanup, the most common items found are single-use plastics such as cigarette butts (with filters containing plastic), food wrappers, beverage bottles, bottle caps, and grocery bags. Much of this plastic litter comes from everyday activities. For example, someone bringing take-out food to the beach may use a plastic container to hold the food, plastic utensils, and a plastic beverage bottle, all of which can become trash if not disposed of properly.

Once left behind, plastic waste doesn’t always stay on the sand. Wind and high tides can carry it into the ocean, contributing to ocean pollution. It’s estimated that about 12 million tons of plastic enter the ocean every year.

Plastic doesn’t naturally decompose. Because it’s made from fossil fuels like oil and gas, it can persist in the environment for hundreds of years. Many plastics contain chemical additives that improve that item’s flexibility, durability, color, or UV resistance. As plastics degrade, harmful substances such as BPA, phthalates, PFAS, heavy metals (like mercury and lead), pesticides, and oil residue can leach into the soil and water.

Here are the potential effects of these substances:

BPA 

• Interference with natural hormone regulation

• Lower fertility

• Prenatal and early childhood exposure is linked to higher risks of anxiety and depression

• Increased risk of obesity, type 2 diabetes, cardiovascular diseases, and high blood pressure -ADHD, and reduced cognitive function.

• Increased cancer risk

Phthalates

• Disruption to reproductive function

• Developmental problems in infants and children

• Increased risk of asthma and allergies

PFAS

• Thyroid problems

• High cholesterol

• Complication with pregnancies

• Increased cancer risk

Heavy Metals (lead, mercury)

• Damage to the brain and nervous system, especially in children and fetuses

• Long-term cognitive harm

• Long-term organ damage

Pesticides and Oil Residue

• Increased cancer risk

• Disruption of hormones

• Harming of liver, kidneys, and nervous system

Over time, plastics break down into tiny particles called microplastics. Marine animals often ingest these particles, allowing toxic chemicals to enter the food chain. When humans eat contaminated seafood, microplastics and their toxins can enter the human body. Research is still ongoing, but studies suggest these substances may:

• Cause inflammation

• Disrupt hormones

• Weaken the immune system

• Increase the risk of long-term health problems, including cancer

• Contribute to developmental issues, especially in children

Plastic trash is one of the most concerning ways marine pollution connects directly to human health.

Physical Injury from Beach Litter

Beachgoers can get hurt simply by walking barefoot on the sand. Sharp litter such as broken glass, plastic shards, and metal can cause cuts and punctures that may lead to infection.

Trash can also harbor harmful bacteria and germs that cause:

• Skin infections

• Gastrointestinal illnesses

• Respiratory problems

Plastic litter holds moisture, nutrients, and contaminants, creating ideal conditions for bacteria and viruses to thrive. What may seem like harmless debris can actually become a health hazard for families enjoying a day at the shore.

Pollution of Water Sources

Beach litter doesn’t stay in one place. Chemicals and bacteria from trash can wash into nearby rivers or seep into groundwater systems. This contamination can affect drinking water supplies and recreational waters.

As ocean pollution and coastal contamination increase, so does the risk of human exposure to toxins and disease-causing microorganisms. Long-term exposure may contribute to gastrointestinal illness, hormonal disruption, and other chronic health conditions.

Protecting our waterways from pollution is essential not only for the environment but also for safeguarding public health and ensuring safe water for everyone.

Climate Change and Human Impact

Climate change refers to long-term shifts in global temperatures and weather patterns, largely driven by human activities—especially the burning of fossil fuels like oil and gas. When burned, these fuels release greenhouse gases such as carbon dioxide (CO₂), which trap heat in the atmosphere and warm the planet.

The ocean plays a critical role in slowing climate change by absorbing and storing CO₂ in two key ways:

• Cold ocean water absorbs CO₂ from the atmosphere.

• Coastal ecosystems like seaweed, seagrass, and mangroves capture and store carbon.

Plastic litter is made from fossil fuels. As it breaks down on beaches and in the ocean, it damages marine ecosystems and weakens the ocean’s ability to store carbon. Some plastics also fragment into tiny particles that can contribute to warming surface waters. Warmer oceans absorb less CO₂, reducing the ocean’s natural defense against climate change. When less carbon is stored, it can lead to:

• Rising sea levels

• More severe storms

• Heatwaves

• Floods, droughts, and wildfires

• Food and water shortages

These events directly harm people through heat exhaustion, heatstroke, respiratory issues from poor air quality, displacement, and resource scarcity.

Why Beach Cleanup Matters

Every piece of litter removed from the sand helps reduce ocean pollution, protects marine ecosystems, and lowers the risk of human exposure to toxins and injuries.

By supporting Clean Shores, you can make a real impact today. Your donation funds our first BeBot—an eco-friendly, beach-cleaning robot—removing litter and restoring beaches for people and wildlife. Together, we can protect marine life, preserve our coastlines, and create a future where clean beaches are the norm, not the exception.

By supporting marine conservation, we protect not only sea turtles, seabirds, and fish — but also ourselves, our children, and future generations.