I've watched people surf in the ocean, but I've heard some waves in lakes and rivers can be suitable for it!
I love surfing in the ocean.  Is there some sort of surfing competition at the Olympics?
US Open of Surfing
The U.S. Open of Surfing is a week-long surfing competition held annually during the summer in Huntington Beach, California. Generally held on the south side of the Huntington Beach Pier, the U.S. Open is part of the qualification process for the World Surf League and is a WSL QS 10,000 event. It is the largest surfing competition in the world. It has been owned by IMG since 2000.
As part of the event, notable people in the world of surfing are added to the Surfing
Surfing
Surfing is a surface water sport in which the wave rider, referred to as a surfer, rides on the forward or face of a moving wave, which usually carries the surfer towards the shore. Waves suitable for surfing are primarily found in the ocean, but can also be found in lakes or rivers in the form of a standing wave or tidal bore. However, surfers can also utilize artificial waves such as those from boat wakes and the waves created in artificial wave pools.
The term "surfing"