Oceanic ecosystems are vast and diverse environments found in the world's oceans. They include various habitats such as coral reefs, open ocean, and deep-sea areas. These ecosystems support a wide range of marine life, including fish, mammals, and invertebrates, all of which play crucial roles in maintaining ecological balance. The health of oceanic ecosystems is vital for the planet, as they produce oxygen, regulate climate, and provide food for billions of people. Threats like pollution, overfishing, and climate change impact these ecosystems, making conservation efforts essential for their survival and the well-being of all life on Earth.