Waterproof cam?

Go pro if you want to mount? If not, you can probably find some cameras that attach on a helmet

 

Go Pro HD Hero if you want to make a video by yourself, or just of the wave. if you're looking to do real in the water filming your best bet is to buy a good cam then get housing for it. it is a little expensive though, so it all depends on what type of filming you want to do and whos going to be looking at it

 

Dan tell Justin to get a nikon d5000 and get the waterproof case....if he has the money hahaha