Plastics are a big problem in the oceans, breaking down into tiny pieces called microplastics that are found everywhere. These microplastics can harm marine life, especially algae. Scientists have found that microplastics are commonly made of polyethylene and polypropylene, and they can be found in sediments, seagrass, and throughout the food chain. Algae can interact with microplastics, which could help clean up the ocean, but more research is needed to figure out the best way to do this. The main issue is that we don't have good ways to measure how much microplastic is out there, which makes it hard to know how much harm they are causing. We need to do more research to understand where microplastics come from, how they spread, and how they affect the environment and our health.