Marine pollution happens when harmful substances like plastic, chemicals, and waste enter the ocean. Most of this pollution actually comes from land-based activities, not the ocean itself.
There are two main types:
1. CHEMICAL POLLUTION
Fertilisers and chemicals from farms and cities flow into rivers and eventually reach the ocean. This can harm marine ecosystems and water quality.
2. MARINE DEBRIS
This includes everyday items like:
- Plastic bags
- Bottles and caps
- Cigarette butts
- Food wrappers
- Fishing gear
Around 80% of ocean trash comes from land.
WHY IS THIS A BIG PROBLEM?
Marine pollution isn’t just ugly, it’s deadly.
WILDLIFE IS SUFFERING
Around 100,000 marine mammals die each year from plastic pollution
Animals like turtles, dolphins, and seabirds often mistake plastic for food
A single piece of plastic can be enough to kill a turtle
ENTANGLEMENT KILLS
Discarded fishing nets and plastic waste trap animals:
- They may slowly starve or drown
- They can’t swim or surface to breathe
Microplastics are everywhere
These move up the food chain — meaning humans may also be consuming them
Tiny plastic particles (smaller than 5mm) are now found in plankton, fish, and even whales
The Bigger Picture
Marine pollution affects more than just animals:
- Ecosystems collapse when species disappear
- Fisheries are impacted, affecting food supply and livelihoods
- Human health risks increase due to contaminated seafood
If current trends continue, 95% of seabird species could ingest plastic by 2050
What You Can Do
1. Reduce single-use plastic
- Bring your own reusable bottle, bag, and containers
- Say no to straws and plastic cutlery
2. Dispose of waste correctly
- Never litter — even small items end up in the ocean
- Recycle correctly (check local guidelines)
3. Join clean-ups
- Great way to get involved locally
- Beach and community clean-ups directly remove harmful waste
4. Be responsible around marine life
- Never discard fishing line or gear
- Keep a safe distance from marine animals (protect them from stress and harm)
5. Spread awareness
- Talk about it
- Share what you know
- Help others understand their impact
Every Action Counts
Marine pollution may feel like a huge global issue, but it’s driven by everyday choices.
By making small, conscious decisions, you’re helping to:
- Protect marine wildlife
- Preserve ocean ecosystems
- Safeguard future generations
The ocean gives us so much, it’s time we protect it.
References
Australian Marine Conservation Society. (n.d.). Plastic pollution. https://www.marineconservation.org.au/plastic-pollution/
National Geographic Society. (n.d.). Marine pollution. https://education.nationalgeographic.org/resource/marine-pollution/
Ocean Conservancy. (2024). International Coastal Cleanup report. https://oceanconservancy.org/trash-free-seas/international-coastal-cleanup/
United Nations Environment Programme. (2021). From pollution to solution: A global assessment of marine litter and plastic pollution. https://www.unep.org/resources/pollution-solution-global-assessment-marine-litter-and-plastic-pollution
World Wildlife Fund. (n.d.). Plastic pollution. https://www.worldwildlife.org/threats/plastic-pollution
Wilcox, C., Van Sebille, E., & Hardesty, B. D. (2015). Threat of plastic pollution to seabirds is global, pervasive, and increasing. Proceedings of the National Academy of Sciences, 112(38), 11899–11904. https://doi.org/10.1073/pnas.1502108112
World Wide Fund for Nature Australia. (n.d.). Marine debris and ocean plastics. https://www.wwf.org.au/what-we-do/oceans/marine-debris