The impacts of global warming on marine life are complex and widespread. Climate change caused by increasing global temperatures affects all marine ecosystems and the living creatures in them. One of the most significant impacts is an increase in sea surface temperatures. Higher temperatures cause coral reefs to bleach, a process in which corals expel the symbiotic algae that provide them with color and nutrition. This has the potential to destroy habitats for many marine species and disrupt food chains. In addition, global warming causes an increase in carbon dioxide (CO2) levels in the atmosphere which also has an impact on ocean acidity. This process, known as ocean acidification, changes the chemical composition of seawater. Many marine organisms, such as shellfish and plankton, depend on calcium carbonate to build their shells. As acidity increases, their ability to form shells decreases, which can decrease populations and affect entire ecosystems. Changing weather patterns also impact marine life. More frequent flooding and storms can change water flows and carry pollutants into the ocean. Additionally, climate shifts can influence the migration of fish and marine mammal species. Many species try to adapt to warmer temperatures by moving to cooler areas, but not all species adapt quickly. Phenomena such as El Niño and La Niña have other impacts, including the distribution and abundance of fish. With an increasingly uncertain climate, fishermen and the fishing industry will face major challenges due to uncertainty in catches. It may also lead to increased conflict between fishermen competing for dwindling resources. The impact of global warming can also be seen from the loss of natural habitats, such as mangroves and seagrass beds. This region serves not only as a refuge for many marine species but also as an effective carbon sink. The threat of these habitats is causing more species to become endangered. Warmer ocean water also increases the spread of disease among marine animals. Organisms that are already stressed due to environmental changes are more susceptible to pathogens. This leads to higher mortality rates among the species. Overall, the impact of global warming on marine life demands serious attention. Sustainable solutions must be sought to reduce CO2 emissions and protect fragile marine ecosystems. Reducing the use of fossil fuels, supporting renewable energy policies, and educating the public about the importance of preserving the marine environment are important steps to ensure the survival of marine life in the future.