Summary
Plastics break into microplastics that are ingested by organisms and travel up food chains.
In depth
About 8 to 11 million tonnes enter oceans annually. Gyres such as the Great Pacific Garbage Patch accumulate debris. Effects: entanglement, ingestion, chemical leaching. Microplastics (below 5 mm) are found from the Arctic to the deep sea.
Plastics persist for decades to centuries. Ghost nets entangle wildlife. Policies include bans on single-use plastics and extended producer responsibility.
Remember: most ocean plastic comes from land.
Over 400 million tonnes of plastic are made each year, and an estimated 8 to 11 million tonnes enter the ocean annually. Plastic does not biodegrade quickly; sunlight, waves and abrasion fragment it into microplastics (under 5 mm) and nanoplastics.
Wildlife is harmed by entanglement in nets and ropes (ghost gear), ingestion causing blockage and false satiation, and chemical additives or adsorbed pollutants. Gyres such as the Great Pacific Garbage Patch concentrate debris. Microplastics have been found in deep sea sediments, Arctic ice, food and human blood.
Example: a Laysan albatross chick found dead with a stomach full of bottle caps.
Frequently asked questions
What is Plastic Pollution?
Plastics break into microplastics that are ingested by organisms and travel up food chains.
Which area of biology covers Plastic Pollution, and how advanced is it?
Plastic Pollution is one of the 54 topics in Marine & Environmental Biology. It is rated Intermediate, so it suits learners who already know the core vocabulary. Related topics in this area include Marine Microplastics Biology, Recycling and Waste, Pollution.
Why does Plastic Pollution matter?
Solutions focus on reducing production, better design and waste systems, not just clean-up.
Can you give an example of Plastic Pollution?
Seabirds like albatross chicks are fed plastics by parents.
What should I learn before Plastic Pollution?
Work through the Beginner topics in Marine & Environmental Biology first, such as Oceans, Ocean Zones, Plankton, then return to Plastic Pollution. Intermediate topics assume the Beginner vocabulary.
What topics are related to Plastic Pollution?
The closest topics to Plastic Pollution are Marine Microplastics Biology, Recycling and Waste, Pollution, Water Quality Indicators. Comparing them side by side is a good way to see how the ideas connect.
How can I check that I understand Plastic Pollution?
Read the summary and the in-depth section, then use the quick check on the interactive lesson for Plastic Pollution. To practise the whole of Marine & Environmental Biology, use the Marine & Environmental Biology quiz.
How is Plastic Pollution different from Marine Microplastics Biology?
Plastic Pollution: Plastics break into microplastics that are ingested by organisms and travel up food chains. Marine Microplastics Biology: Tiny particles carry pollutants and microbes and are ingested at every trophic level. Read both side by side and note what each one explains.
How should I study Plastic Pollution step by step?
First, read the summary and write the definition in your own words. Second, read the in-depth section and note any example. Third, compare it with Marine Microplastics Biology and explain the difference aloud. Finally, take the Marine & Environmental Biology quiz and come back to this page for any question you miss.