ELI5: Explain Like I'm 5

Marine pollution

Marine pollution is when people put bad things into the ocean that make it unhealthy. Some examples of bad things that people put into the ocean are trash, chemicals, and oil. When this happens, the water gets dirty, animals in the water become sick, and people can not swim or eat fish from the water. To make sure the ocean stays safe and healthy, people need to stop putting bad things into it and work hard to clean it up.