Where are most microplastics found on Earth?

Most microplastics are indeed found on the ocean floor, which is a significant environmental concern. Over the years, a large portion of plastic waste that enters the oceans eventually breaks down into smaller particles known as microplastics due to photodegradation, mechanical abrasion, and microbial degradation. These tiny particles are carried by currents and often settle on the seabed, making the ocean floor a key accumulation zone for microplastics.

Research has shown that microplastics can concentrate in specific areas of the ocean floor, including cold-water regions and even near coral reefs. The impact of microplastics on marine life and ecosystems is profound, as they can be ingested by various organisms, leading to harmful effects.

While freshwater lakes, the atmosphere, and urban areas do have microplastics, the ocean floor is where a significant amount is ultimately deposited and stored, highlighting the importance of addressing marine pollution and its broader ecological impact.