The first chapter gives definition of plastics and polymer, brief history of plastics and his inventions, processing of plastics and applications of plastics. The second chapter deals with the different types of plastics. The third chapter provides on the basic concepts of marine pollution, briefly describes the eutrophication, ocean acidification, and plastic pollution. The fourth chapter build a preliminary overview of microplastics and microbeads. The fourth chapter takes the description of microplastiics and microbeads on the web. The fifth chapter discusses how microplastics are float into the ocean, definition of marine debris, plastics waste generating country, and microplastics sampling. The sixth chapter has a special mention on ocean organizations and ocean research institute.