The primary driver of ocean warming is climate change, predominantly caused by human activities, such as the burning of fossil fuels and deforestation. This results in increased concentrations of greenhouse gases in the atmosphere, leading to higher global temperatures. As the atmosphere warms, so do the oceans, which absorb much of this excess heat. Ocean warming has significant implications, including alterations in marine ecosystem dynamics, shifts in species distributions, and increased coral bleaching events. Understanding the causes and impacts of ocean warming is essential for developing effective mitigation strategies to protect marine biodiversity and ecosystem functions.