SERF

Surfing is a water sport in which a person (called a surfer) rides on the front or bottom of a moving wave that usually moves towards the shore.

Surfable waves are mostly found in the ocean and sea, but can be found in lakes or rivers as a "standing wave" or tidal wave.

However, surfers can also use artificial waves created by boats (wakesurfing) as well as waves created in special artificial surf pools.