The impact of global warming on marine life is particularly worrying, considering that these ecosystems support millions of species and play a vital role in climate regulation and the global economy. One of the main effects of global warming is an increase in sea water temperatures. Higher temperatures can cause stress in marine organisms, disrupting reproduction and growth processes. For example, coral reefs, which are very sensitive to temperature changes, are experiencing mass bleaching. As a result, species that depend on coral reefs for shelter and food are threatened with extinction. In addition, global warming causes an increase in sea water acidity levels. Carbon dioxide (CO2) produced by humans is absorbed by the ocean, causing a decrease in pH. This has a negative impact on organisms that have calcium carbonate shells, such as mollusks and some types of plankton. A decrease in the number of plankton can trigger a major impact on the marine food chain, because they are the primary producers that support the life of many schools of fish. Climate change also affects ocean current patterns. Changing ocean currents can influence the distribution of temperature and nutrients throughout the ocean. For example, natural protective forces such as El Niño or La Niña can change fish migration patterns, impacting fishing industries that depend on the presence of certain species. Fish species normally found in warm waters may move towards cooler areas, resulting in changes in local ecosystems and exploitation of resources. The El-Nino and La-Nina phenomena are a real illustration of how much climate change is affecting marine life. Reduced nutrient concentrations in certain areas can reduce fisheries productivity. While many fishermen depend on fish as a source of income, a decline in fish populations could threaten their livelihoods. Other impacts include increased frequency and intensity of storms, which can result in damage to marine habitats. Ecosystems such as mangroves and seagrasses which function as nurseries for various fish species are very vulnerable to climate change. Damage will cause loss of biodiversity and reduce the resilience of marine ecosystems to changes in environmental conditions. In a global context, the impact of global warming on marine life not only impacts ecosystems but also human life. Food sources from the sea, which provide protein for billions of people, will be threatened. This requires us to immediately find solutions and take effective and sustainable mitigation measures to protect marine life from the impacts of global warming. By promoting sustainable fishing practices and protecting marine habitats, we can help maintain a healthy balanced marine ecosystem. Scientific research must also be encouraged to better understand the impacts of global warming, and enforcing policies on reducing greenhouse gas emissions is critical to protecting marine life in the future.