Because of these plastic's improper use, the marine has gradually become unhealthy. However, all creatures are connected tightly due to the food chain. So, if we pollute the ocean, we may be influenced as well.The ways we may be affected are such as environmental, economic, etc. The most primary reason that plastic pollution is such a problem is that it doesn’t go away: “plastics are forever.”

Blue whale, a giant animal in the deep sea, was banned by the International Whaling Commission in 1960 due to human hunting and marine environmental pollution. At this time, 350,000 blue whales have been killed, and the population in the world has been reduced to 1% less than 100 years ago. At present, there are only less than 50 blue whales in the world.

Florida manatees live in freshwater rivers, estuaries, Atlantic coasts and Gulf coasts. Habitat loss, high stillbirth rate and poisoning of pesticides and herbicides are the main problems of this endangered marine animal. They are often accidentally killed by sailboats because of the slowness and concealment of boats. It is reported that only about 3,200 Florida manatees are still alive.