Rising ocean temperatures have a significant impact on marine ecosystems, leading to coral bleaching, altered species distributions, and disrupted reproductive patterns. Warmer waters stress aquatic life, especially temperature-sensitive species like corals, which require stable conditions to thrive. As a result, coral reefs, among the most diverse ecosystems, face degradation and loss, affecting the numerous species that depend on them. Additionally, shifts in fish populations can impact commercial fisheries and local economies. Addressing rising ocean temperatures through climate action is essential for maintaining marine biodiversity and overall ecosystem health.