Global warming has a significant impact on marine life around the world. Rising sea surface temperatures due to the absorption of heat from greenhouse gases cause detrimental shifts in marine ecosystems. One of the most striking impacts is coral reef bleaching. Coral reefs, which require stable temperatures, can experience stress due to drastic increases in temperature. This stress causes the symbiotic algae within the coral tissue to die, leaving the coral to lose color and, if not recovered, risk dying. In addition, global warming also causes an increase in carbon dioxide levels in the atmosphere, which in turn increases ocean acidity. This phenomenon has a negative impact on mollusks and other calcifying organisms such as shellfish, coral reefs and plankton. Higher acidity disrupts an organism’s ability to build shells and skeletons, threatening the food chains that those organisms depend on. Changes in temperature also change the distribution of marine species. Fish and other aquatic animals will move towards the poles to find cooler temperatures. With these shifts, local ecosystems can be disrupted, leading to greater competition between native species and newly introduced species. This can result in a decrease in biodiversity and damage the stability of the ecosystem. The impact of global warming is also seen in extreme weather phenomena. Increased frequency and intensity of storms can damage marine habitats and coral reefs. Increased hurricane seasons impact fishermen who depend on the balance of these ecosystems for their livelihoods. What’s more, water pollution associated with hurricanes can worsen conditions for marine life. Changes in ocean currents are also a result of global warming. Disturbed ocean currents can change fish migration patterns and affect fishermen’s catches. The timing of migration and the presence of certain species are closely related to temperature and currents. If these changes are not addressed, valuable fish populations could decline, threatening the food security of coastal communities. Human health impacts are also closely linked to marine life. Stress experienced by marine ecosystems can increase the risk of diseases that can be transmitted to humans through consumption of infected seafood. In addition, loss of biodiversity can reduce its ability to provide ecosystem services that are vital for human life. Efforts to mitigate global warming and preserve marine life are critical to maintaining healthy ecosystems. Through reducing carbon emissions, protecting coral reefs, and sustainable management of fisheries, we can help ensure the survival of many marine species and the human communities that depend on them. Investments in green research and technology can also provide innovative solutions to the challenges posed by climate change. These innovations must be promoted to give future generations the opportunity to enjoy healthy marine life.