Settings and features
The EOS R system's fast autofocus makes it ideal for sports photography. But you can also get perfect results with a Canon EOS DSLR. A good lens is important; I recommend a fast telephoto lens. If you can get close enough to the surf spot (cliff, beach or boat), a telephoto zoom lens with a focal length of 70-200mm and a speed of f/2.8 is brilliant. If you are a little further away, focal lengths in the 400mm range are suitable. Of course, when you are closer to the action, wide-angle shots are also very nice.
Short exposure times are important to capture the surf action, including the splashes, so work with an open aperture. If it's cloudy or you're shooting in low light, increase the ISO so that you can still shoot fast in low light.
Try to imagine the picture you want to take and choose the autofocus areas accordingly, and make sure your subject is not always in the centre. Continuous focusing (AI SERVO) is also important. Fast burst shooting also helps you capture the perfect moment.