Surfing is a sport where you ride on a board in the water along the waves. Imagine you are at the beach and you see the big waves in the water. Surfers use special boards that are longer and stronger than regular boards to ride on the waves. They put something called wax on the board so that they don't slip off.
To catch a wave, the surfer paddles with their hands towards the wave. Once they feel the wave picking up the board, they quickly stand up on the board and try to balance themselves while riding the wave towards the shore. It's kind of like standing up on a skateboard while going down a big hill, but in the water.
Surfing is not very easy and it takes a lot of practice. Surfers need to be able to swim and be comfortable in the water because the waves can be really strong and push you around. They also need to learn how to read the water and the waves to know when and where to catch them.
Surfing can be a lot of fun, but it's important to be safe and follow the rules of surfing. Surfers sometimes wear special clothes to protect themselves from the sun and cold water. They also have rules about where and when they can surf to make sure everyone stays safe in the water.