A healthy ocean is essential to our very existence and all life on Earth. It is humanity’s greatest #ClimateAction ally, the world’s largest ecosystem and home to nearly a million known species. Yet, heating, pollution, acidification, and oxygen loss pose severe threats to the ocean’s health. Despite the critical importance of protecting it, decades of irresponsible exploitation have led to an alarming level of degradation. ➡️ Swipe through to learn why we must take action to #SaveOurOcean. 📸: unesco