Marine microplastics are a big problem for future generations. These tiny plastic particles come from larger plastic items breaking down or being made small on purpose. They end up in the oceans through littering, runoff, and dumping. Oysters that eat microplastics during reproduction have trouble eating and reproducing, which affects their ability to have healthy babies. This shows that microplastics can harm marine animals by changing how they eat and use energy. This is a global issue because there is a lot of plastic in the oceans that can move around and cause problems for the environment and living things.