The world ocean is a huge body of water that covers more than 70% of the Earth's surface. This is a huge resource on which many life processes on our planet depend. The ocean is a source of food, oxygen, energy and other resources, and it also regulates the climate and provides life for many marine and freshwater animals. However, the world's oceans also face many serious challenges. One of the biggest problems is pollution. Most of the pollution in the ocean comes from human activities, such as emissions of garbage and chemical waste, oil and gas spills, carbon emissions, etc. These pollutants not only harm marine animals, but also threaten the health of people who consume seafood. Another serious problem facing the world's oceans is climate change. Climate change affects the temperature and chemical composition of water, which can affect marine ecosystems and lead to the depletion of some species of fish and marine animals. In particular, climate change can lead to the spread of hypoxia in the ocean, which is dangerous for marine animals. Finally, pollution and climate change may pose a major threat to the future of the world's oceans. It is up to us how we deal with this vast resource, which is an important source of life for our entire world. Therefore, we must deal with it