Surfing is a surface water sport in which the wave rider, referred to as a surfer, rides on the forward 
yeah, I have seen it before!  Do you participate in the sport?
Yes, the wave is usually carrying the surfer towards the shore.
It is fascinating!  When was surfing invented?
Waves suitable for surfing are primarily found in the ocean, but can also be found in lakes or in rivers 
People can surf in lakes and rivers?  How is that even possible?  Rivers don't have waves, right?
surfers can also utilize artificial waves such as those from boat wakes and the waves created in artificial wave pools.
Oh!  I see!  That makes sense!  Do you know of any famous surfers?
The term "surfing" refers to the act of riding a wave irrespective of the board
What do you mean by "irrespective of the board"?  Are you saying the board is not even needed?