El Nino is a big weather event. It happens when the trade winds in the Pacific Ocean get weaker or change direction. This makes warm water move back to the eastern Pacific, which can cause problems for people in South America and Asia.
When El Nino happens, the ocean gets warmer and there is a lot of rain in South America. But in Asia and Oceania, there is a risk of droughts. This is bad news for the ocean because it can't absorb as much carbon dioxide.
We need to keep an eye on El Nino because it can make the ocean's problems worse. The ocean is already getting warmer because of climate change, and El Nino can make it even warmer.
