River surfing is like surfing but on a river instead of the ocean. It's like standing up and riding on a big bump of water as it moves down the river. But instead of just going straight, you can do tricks like jumping or spinning on the wave.
People usually use a special kind of surfboard that is shorter and wider than regular surfboards. This helps them stay balanced on the wave and make quick turns. They also wear a special kind of wetsuit and helmet to protect themselves from the chilly water and rocks in the river.
It's important to be safe when river surfing because rivers can be dangerous. People usually need to have some experience surfing in waves before they can try river surfing. It's also important to make sure the water flow isn't too strong and there aren't any dangerous obstacles in the river.
Overall, river surfing can be lots of fun for experienced surfers who want to try something new and different. But it's important to stay safe and follow the rules so everyone can have a good time.