The ocean can absorb CO2. The absorbed CO2 will be taken by coral reefs to be used in the process of photosynthesis and produce oxygen useful to living things. The sea is also capable of bringing hot winds to the Polar Regions and bringing cold winds to the equator. So there is no area that is too hot and too cold on earth. The sea is also a source of protein in the form of fish, in addition, seaweed and sea coral is partly regarded as an indicator of marine hygiene. And the last beautiful underwater scenery can be used as a tourist attraction for humans.
Sea pollution occurs due to human factors and natural factors. Marine pollution must have a direct impact on marine organisms. Not only that, it will also impact human activities. The problem that always happens is that plastic waste continues to carry into the ocean and cause the buildup that eventually disrupts the marine ecosystem and have a major impact on human life. Therefore, the community is currently aggressively cleaning up plastic waste in the sea, as described in the article https://www.kompasiana.com/selamethariadi/5a25f1fefcf6814e833e4132/indonesia-bebas-sampah-plastik-di-laut-mungkinkah
Plastic wastes are carried marine negatively impact on coastal ecosystems, one of which coral reefs and mangrove ecosystems become disturbed and can even cause death for mangrove seeds and coral reefs. The presence of hazardous and toxic materials from plastic waste will cause fish and another marine biota to be disturbed even at very high concentrations can lead to death. From plastic waste will also affect human life, especially health, the danger of toxins can enter the body through the water that we use and also the seafood that we usually consume. Plastic waste has the potential to degrade, or even lead to, the loss of the biodiversity of coastal ecosystems. Therefore, if the plastic waste is not handled properly, it can lead to extinction in certain biota, especially biota that is almost extinct. There are still many more negative effects of marine pollution that can trigger greater damage.